Synthetic oil question

pt518sti · 04-11-2007, 10:02 AM

I noticed a lot of people not happy with Mobil 1 synthetic oil on here, and a lot of people recommending either Royal Purple or Castrol Syntec.
My question is why do so many of you that use Castrol Syntec use 0w-30 and not 5w-30, like what is recommended for our cars?
It says right on Castrol website that 0w-30 is ideal for very cold conditions up to -40 degrees. Why not use 5w-30 which is the recommend grade for "normal" temperatures. I don't think that many of us live in Alaska where it would get down to -40 degrees outside..

mnsubaruboy · 04-11-2007, 10:11 AM

I just use 5w-30 all year round (Royal Purple)
it gets mighty cold (recorded -50 some nights this winter)

not sure why any warmer climate states would be using 0w-30? interested to find out

mccullpl · 04-11-2007, 10:19 AM

http://theoildrop.server101.com/foru...=0&Board=UBB51

Check out this forum. The part I linked you to is dedicated to the 0W-30 German Castrol that a lot of people like to use (I use it too). IIRC, the viscosity comes out to be on the high side for a 30 weight, and is an all around great oil. Plus, some people have solved their oil consumtion (sp?) problems by switching to it.

BTW, the German Castrol is not the same as the US made stuff...unless they've changed the US stuff.

Hope this helps!
Pat

pt518sti · 04-11-2007, 10:19 AM

Also seems as though there is a German version of Castrol Syntec which is different than the regular one.. at least that's the impression I'm getting from checking out a bunch of synthetic oil related threads on here

kts262 · 04-11-2007, 10:27 AM

Hopefully this gets moved into the Power + Performance forum so you can get more responses.

The "German Castrol" 0w30 is what is used mostly in Europe.

The Castrol 0w30 is a "thick" 30 weight which has had less issues with oil consumption then Mobil 1 5w30. While 5w30 is recommended 0w30, 10w30, etc will work just fine as well.

A lot of tuners have actually recommended 40 weights in cars that have had some issues with oil consumption and it's helped. I'll probably be moving up to a 5w40 on my next oil change.

While both the 0w30 Castrol and 530 Mobil 1 are both 30 weights they are actually at different ends of the 30 weight rating. The Mobil 1 is a "thin" 30 weight and is closer to a 20 weight whereas the Castrol is closer to a 40 weight.

Check out http://www.bobistheoilguy.com/ and the forums on there for a TON of information about oil. I've been reading up on this since I've had some issues with my car and from running Mobil 1. I'm currently on Motul 8100 5w30 and my oil consumption has dropped significantly.

BlueGold · 04-11-2007, 10:39 AM

I run 5w-30 Castrol Syntec oil and have not had any issues with oil consumption. However, several oil analyses have shown that this oil does not remain at 30w but, instead, wanders close to 20w. My next oil change is soon and I will once again get an analysis and will probably move to 40w. If the 40w doesn't stay 40w then I will probably switch brands.

pt518sti · 04-11-2007, 12:44 PM

Thanks for the advice and info, guys.
I think I'm going to try that German Castrol 0w-30. I'm just hoping I can find it locally.

PS: Mods, feel free to move this thread if it's in the wrong section. I wasn't sure exactly where it should go. Thanks

Rookie84 · 04-11-2007, 12:54 PM

I'm currently using Motul 300V and I'm loving it. The car runs so smooth and it was an unbelievable change coming from Mobil 1. Motul 8100 should be good enough and not as expensive as 300V. I heard that 300V is a bit of an overkill for the stock engine and 8100 is good enough. I'm just using 300V since I can get it at invoice.

KrazyKarl · 04-11-2007, 01:11 PM

on my second change, i switched to castrol 0w30 because of all the good things i read on this forum. Havent burned a drop and my gas milage went up 2mpg consistantly.

blurred · 04-11-2007, 01:24 PM

long read.... but very interesting none the less!

http://ferrarichat.com/forum/showthread.php?t=136052

it persuaded me to try out the gc 0w30

jaydow11 · 04-11-2007, 02:25 PM

I use GC 0W-30 too!!! After switching from M1!

modaddict · 04-11-2007, 02:33 PM

I burn ZERO oil and use Mobil 1 5w-30, 3k oil changes. it helps to have the crawford performance air/oil separator.

check this thread out:
http://forums.nasioc.com/forums/show....php?t=1238027

here's my post in it:

<hr style="color: rgb(16, 92, 168);" size="1">   Page 158 of 177:
http://www.zag.si/~jank/public/bmw/oil_bible.pdf

this is a copy of that page. this is for 5w-30 oil from highest to lowest ranking scores:

Brand Product P/S/B API VI PP FP FRP HT/HS Noack TBN 4 Ball Phos Zinc CCS Ash Rev. SCORE
AMSOIL XL7500 S SL/SJ 196 -60 453 482 3.10 8.80 10.1 0.38' - - 2320 @ -25 - Apr-03 765
Schaeffer Moly Pure S SJ 185 -60 465 500 3.80 13.00 8.0 - - - 2100 @ -25 0.90 ? 763
AMSOIL 5w30 S SL/CF 182 -60 446 - 3.50 6.90 11.0 0.35'' - - 2555 @ -25 ~1.0 Oct-01 759
AMSOIL XL7500 S SL/SJ 196 -60 444 468 3.10 8.80 10.1 0.38' - - 2320 @ -25 - Jul-02 756
AMSOIL S3000 S CH-4/SL 175 -60 446 482 3.50 8.60 12.0 0.39' - - 6131 @ -30 ~1.5 Jan-02 749
AMSOIL S3000 S CI-4/SJ 175 -60 446 482 3.50 8.60 12.0 0.39' - - 6131 @ -30 ~1.5 Jan-02 749
Havoline Synthetic S SL/CF 172 -44 471 - 2.90 10.00 8.6 - 980 1070 3700 @ -30 0.93 Sep-02 732
Exxon Superflo Syn. S SJ 159 -62 471 - 3.10 13.00 5.0 - - - 2200 @ -25 - Oct-99 725
Valvoline SynPower S SL/CF 173 -44 468 - 2.90 12.00 9.0 - 1000 - 4200 @ -30 1.10 Apr-02 725
Valvoline SynPower S SL/CF 173 -44 468 - 2.90 12.00 9.0 - 1000 - 4200 @ -30 1.10 Mar-03 725
Chevron Supreme Syn. S SL/CF 161 -62 464 - 2.90 13.00 9.0 - 920 1280 2400 @ -25 1.12 Oct-02 724
CAM2 Synavex S SL/SJ 175 -54 464 - 2.90 13.00 5.0 - - - 6600 @ -30 - ? 722
Havoline Energy P SJ 188 -54 450 - 2.95 14.50 5.0 - - - 6600 @ -30 - ? 718
Kendall Elite S SJ/CF 160 -54 468 - 3.10 13.00 5.0 - - - 3910 @ -30 - Sep-98 715
Kendall SHP S SJ/CF 160 -54 468 - 2.90 13.00 5.0 - - - 3820 @ -30 - Jul-00 711
Valvoline SynPower Racing S - 164 -49 468 - 2.90 13.00 5.0 - - - 2400 @ -25 - Oct-99 710
Red Line Passenger S SJ/CF 153 -49 455 - 2.90 6.00 5.0 - - - 3300 @ -25 - May-00 707
Valvoline HP Syn S SH/CD 164 -40 460 - 3.50 13.00 5.0 - 1200 1200 3300 @ -25 - Jul-98 705
Valvoline VR-1 Racing Syn S SH/CD 164 -40 460 - 3.50 13.00 5.0 - 1200 1200 3300 @ -25 - Jul-98 705
5w30
0w30
Appendix A
CAM2 Full Synthetic S SJ/SH 160 -49 464 - 2.90 13.00 5.0 - - - 3000 @ -20 - ? 702
Petro Canada Synthetic PCMO S SL 169 -44 455 - 2.90 13.00 6.5 - 800 - 3920 @ -30 0.90 May-02 700
Castrol Syntec S SL/CF 172 -38 455 475 3.00 13.00 5.0 - 900 1000 2400 @ -25 0.90 2001 ? 696
Q. State Synthetic S SL/CF 177 -49 440 482 2.90 13.00 5.0 - - - 6600 @ -30 - Oct-02 695
Valvoline Durablend B SL/CD 161 -38 460 - 2.90 13.00 8.1 - 960 - 5800 @ -30 1.00 Apr-02 694
Neo Neo S SJ 170 -60 430 - 2.90 13.00 6.2 - - - 3000 @ -25 0.64 ? 691
Kendall GT-1 Synthetic S SL/CF 166 -38 446 - 3.10 13.00 7.9 - - 1000 4150 @ -30 1.00 Mar-02 689
Kendall SHP Syn S SL/CF 166 -38 446 - 3.10 13.00 7.9 - - 1000 4150 @ -30 1.00 Mar-02 689
Valvoline Special Syn. Racing S - 157 -40 460 - 2.90 13.00 5.0 - 1200 1200 5700 @ -30 - Mar-03 686
Petro Canada Blend PCMO B SL 162 -49 441 - 2.90 13.00 6.8 - 900 - 4130 @ -30 0.80 Mar-02 685
Conoco Syncon S SL/SJ 170 -45 440 - 2.90 13.00 5.0 - - - 6600 @ -30 - May-02 684
Mobil 1 SuperSyn S SL/CF 167 -49 435 - 3.08 13.00 5.0 - - - 6600 @ -30 1.20 Mar-03 684
Mobil 1 SuperSyn S SL/CF 167 -49 435 - 3.08 13.00 5.0 - - - 6600 @ -30 1.20 Jun-03 684
Havoline Petroleum P SL/SJ 159 -33 450 - 2.90 13.00 7.6 - 940 1030 5700 @ -30 0.90 Mar-03 676
Havoline Petroleum P SL/SJ 159 -33 450 - 2.90 13.00 7.6 - 940 1030 5700 @ -30 0.90 Jun-03 676
Chevron Supreme P SL/SJ 159 -33 450 - 2.90 13.00 7.4 - 940 1030 5700 @ -30 0.90 Mar-03 676
Chevron Supreme P SL/SJ 159 -33 450 - 2.90 13.00 7.4 - 940 1030 5700 @ -30 0.90 Jun-03 676
Castrol Syntec S SL/CF 171 -38 437 450 2.92 13.00 5.0 - 900 1100 6600 @ -30 - Jun-02 675
Chevron Supreme Syn. Blend B SL 159 -31 450 - 2.90 13.00 7.5 - 940 1030 5700 @ -30 0.90 Jun-03 674
Havoline Synthetic Blend B SL/SJ 159 -31 450 - 2.90 13.00 7.5 - 940 1030 5700 @ -30 0.90 Jun-03 674
Schaeffer Supreme 7000 B SL 180 - 448 485 3.50 13.00 7.1 - - - 5073 @ -30 0.86 Jul-02 673
TropArtic Synthetic S SL 158 -60 425 - 2.90 13.00 5.0 - - - 3100 @ -25 0.93 ? 672
Citgo SuperGard Blend B - 154 -27 455 - 3.20 13.00 5.0 - - - 5360 @ -30 - Dec-02 671
Q. State Synthetic S SJ/CF 151 -49 440 482 2.90 13.00 5.0 - - - 6600 @ -30 - May-01 669
Petro Canada Max MultiGrade P SL 160 -44 430 - 2.90 13.00 6.6 - - - 5000 @ -30 0.80 Feb-02 666
Petro Canada Supreme MultiGrade P SL 159 -44 430 - 2.90 13.00 6.8 - - - 4310 @ -30 0.80 Mar-02 666
Citgo SuperGard Blend B - 144 -33 446 - 3.30 13.00 5.0 - - - 2760 @ -25 - May-02 660
Q. State Higher Mileage P SJ 176 -43 410 - 2.90 13.00 5.0 - - - 7000 @ -25 - Sep-00 658
Pennzoil Multigrade P SL/SJ 160 -44 420 - 3.10 13.00 5.0 0.54' - - 6600 @ -30 - May-02 657
Pennzoil Multigrade P SL/SJ 160 -44 420 - 3.10 13.00 5.0 0.54' - - 6600 @ -30 - Nov-02 657
Exxon Superflo P SL/SJ 158 -22 442 - 3.10 13.00 5.0 - - - 6600 @ -30 0.74 Mar-03 655
Shell FormulaShell P SL/SJ 159 -42 421 - 2.90 13.00 6.9 - - 1110 6040 @ -30 0.91 Dec-02 655
Shell FormulaShell P SL/SJ 156 -42 421 - 2.90 13.00 6.9 - - 1110 6040 @ -30 0.91 2001 ? 652
Conoco Hydroclear Super P SL/SJ 158 -40 424 - 2.90 13.00 5.0 - - - 6150 @ -30 - Nov-01 651
76 Lubricants Super P SL 154 -38 420 - 3.10 13.00 6.2 - - 990 5450 @ -30 0.80 Jul-01 647
Motorcraft Super Premium P SJ 159 -40 410 - 3.20 13.00 6.7 - - - 6600 @ -30 0.86 ? 647
Kendall GT-1 P SL/SJ 152 -40 421 - 3.00 13.00 6.2 - - 1000 6500 @ -30 0.80 Mar-02 646
Kendall GT-1 Synthetic Blend B SL/SJ 157 -44 410 - 3.10 13.00 6.2 - - 1000 5500 @ -30 0.80 Mar-02 646
Castrol HIGH MILEAGE P SL/SJ 167 -27 415 415 3.30 13.00 5.0 - 1000 1100 6600 @ -30 - Jun-02 646
Royal Purple Multi-Grade S SL 161 - 455 480 2.90 13.00 5.0 - - - 6600 @ -30 - ? 645
Wolf's Head Super Duty P SL/SJ 162 -33 420 - 2.90 13.00 5.0 - - - 6600 @ -30 <.9 Jul-02 644
Torco MPZ Racing S SL/SJ 176 -40 397 430 2.90 13.00 5.2 - - - 2300 @ -25 - 2001 642
Appendix A
Mystik JT-8 Premium P SL 162 -27 424 - 2.90 13.00 5.0 - - - 6480 @ -30 - Dec-02 642
Q. State HP Blend B SL/CF 165 -35 410 446 2.90 13.00 5.0 - - - 6600 @ -30 - Jun-00 639
Q. State Synthetic Blend B SL/CF 165 -35 410 446 2.90 13.00 5.0 - - - 6600 @ -30 - May-02 639
Royal Purple RP S SJ/CH-4 160 -44 395 435 2.90 13.00 10.5 - - - 6600 @ -30 - ? 639
Wolf's Head Super Duty P SL/SJ 157 -33 420 - 2.90 13.00 5.0 - - - 3330 @ -30 <.9 Oct-01 639
Q. State 4x4 Blend B SL 164 -44 400 460 2.90 13.00 5.0 - - - 6600 @ -30 - May-02 637
LE 8530 Monolec SPB B SJ 145 -40 420 - 2.90 13.00 6.2 - - - 6600 @ -30 0.64 ? 636
Valvoline All Climate P SL/SJ 162 -38 403 - 2.90 13.00 7.0 - 900 1050 6000 @ -30 0.80 Apr-02 636
Castrol Syntec Blend B SL/SJ 160 -27 415 415 3.10 13.00 5.0 - 1000 1100 6600 @ -30 - Jun-02 635
Exxon Superflo P SL/SJ 157 -33 410 - 3.20 13.00 5.0 - - - 6029 @ -30 - Oct-01 635
Kendall Victory B SJ 157 -38 410 - 2.90 13.00 5.0 - - - 5510 @ -30 0.60 Aug-00 634
Mystik JT-8 Premium P SJ/CF 162 -33 410 - 2.90 13.00 5.0 - - - 3400 @ -25 - Oct-00 634
Castrol Syntec Blend B SL/SJ 156 -36 410 430 3.00 13.00 5.0 - 900 900 3200 @ -25 1.00 2001 ? 633
Citgo SuperGard P SL 154 - 442 - 3.20 13.00 5.0 - - - 5810 @ -30 - Jul-00 631
Citgo SuperGard P SL 154 - 442 - 3.20 13.00 5.0 - - - 5810 @ -30 - Dec-02 631
Q. State 4x4 Blend B SJ/SH 158 -44 400 460 2.90 13.00 5.0 - - - 6600 @ -30 - Feb-01 631
Castrol GTX P SL/SJ 160 -27 410 430 3.00 13.00 5.0 - 900 1000 3100 @ -25 0.90 2001 ? 628
Q. State HP Blend B SJ/CF 152 -35 410 446 2.90 13.00 5.0 - - - 6600 @ -30 - Jun-00 626
Walmart SuperTech Blend B SJ/CF 152 -35 410 446 2.90 13.00 5.0 - - - 3500 @ -25 - Sep-01 626
Mobil Drive Clean Plus B SL/CF 159 -44 392 - 2.90 13.00 5.0 - - - 5896 @ -30 - Apr-03 624
Mobil Drive Clean Plus B SL/CF 159 -44 392 - 2.90 13.00 5.0 - - - 5896 @ -30 - Jun-03 624
TropArtic Conventional P SL 155 -30 410 - 2.90 13.00 5.0 - - - 4688 @ -30 - ? 624
TropArtic Conventional P SL 155 -30 410 - 2.90 13.00 5.0 - - - 4688 @ -30 0.80 ? 624
Walmart SuperTech P SL/SJ 155 -35 405 430 2.90 13.00 5.0 - - - 3500 @ -25 - Sep-01 624
Superior Lub. PCMO P SJ 154 -35 405 - 2.90 13.00 5.0 - - - 3300 @ -20 1.00 ? 623
Schaeffer Micron Moly P SL 159 - 424 455 3.20 13.00 7.1 - - - 6000 @ -30 0.86 Jun-02 622
Synergyn Racing Oil S - 156 -30 406 - 2.90 13.00 5.0 - - - 6600 @ -30 - ? 621
Castrol GTX P SL/SJ 160 -27 400 430 3.10 13.00 5.0 - 1000 1100 6600 @ -30 - Jun-02 620
Q. State Multigrade P SL/SJ 159 -27 405 430 2.90 13.00 5.0 - - - 6600 @ -30 - Oct-01 620
Q. State Peak Performance P SL/SJ 159 -27 405 430 2.90 13.00 5.0 - - - 6600 @ -30 - Jan-02 620
Spectro Spectro4 P SH 151 -29 410 - 2.90 13.00 5.0 - - - 6600 @ -30 - ? 619
Kendall Superb 100 P SJ 155 -38 396 - 2.90 13.00 5.0 - - - 5900 @ -30 - Jun-00 618
Mobil Drive Clean P SL/SJ 159 -38 392 - 2.90 13.00 5.0 - - - 5500 @ -30 - Apr-03 618
Mobil Drive Clean P SL/SJ 159 -38 392 - 2.90 13.00 5.0 - - - 5500 @ -30 - Jun-03 618
Kendall GT-1 P SJ 154 -38 396 - 2.90 13.00 5.0 - - - 5900 @ -30 - Jul-00 617
Mobil Drive Clean Blend B SL/CF 156 -39 392 - 2.90 13.00 5.0 - - - 5000 @ -30 - May-02 616
Shell FormulaShell Syn S SL/CF - -35 440 - 2.90 13.00 5.0 - - - 4300 @ -30 - Jul-03 504
Valvoline Maxlife P SL/SJ - -38 430 - 2.90 13.00 8.0 - 950 1080 6600 @ -30 - Apr-02 503
Lyondell Supreme P SJ - -40 396 - 2.90 13.00 5.0 - - - 3100 @ -25 - Dec-00 465
Pennzoil Synthetic S SJ 159 -54 - - 3.05 6.90 5.0 - - - 2000 @ -25 - May-00 263
Pennzoil Synthetic S SL 176 -54 - - 3.07 13.00 5.0 - - - 6600 @ -30 - Jan-03 262
Pennzoil Synthetic Blend B SJ 155 -49 - - 3.00 13.00 5.0 - - - 3300 @ -25 - Aug-00 235
Appendix A
Pennzoil High Mileage P SL/SJ 165 -27 - - 3.30 13.00 5.0 - - - 7000 @ -30 - Dec-02 229
CAM2 Earth Friendly P SJ/SH 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Apr-97 228
CAM2 Magnum HD P SJ/SH 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Aug-02 228
CAM2 Magnum Plus P SJ/SH 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Apr-97 228
CAM2 Magnum XHD P SL/SJ 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Aug-02 228
CAM2 SuperPro P SL/SJ 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 - Oct-02 228
Pennzoil Synthetic Blend B SL 158 -33 - - 3.00 13.00 5.0 - - - 6600 @ -30 - Jan-02 222
RANKING

trippin · 04-11-2007, 02:44 PM

Quote:

Originally Posted by pt518sti

Thanks for the advice and info, guys.
I think I'm going to try that German Castrol 0w-30. I'm just hoping I can find it locally.

You can buy the German Castrol Syntec at any Autozone. It will be seperate from the US Castrol Syntec. You can tell it because on the bottles it will say European blend.

TucsonSTi · 04-11-2007, 03:07 PM

I have used:
Mobil1 - Burned oil
Royal Purple - Burned oil...not as bad as Mobil1
Redline - Burned oil...Not as bad as Royal Purple
Amsoil - No oil burned and runs smoother

Also, noticed slight lifter tick with all oils used after 2000+/- miles....also had track days in there as well....I have not had the car on the track since switching to Amsoil...but so far no tick.

Chris' sti · 04-11-2007, 03:33 PM

Quote:

Originally Posted by TucsonSTi

I have used:
Mobil1 - Burned oil
Royal Purple - Burned oil...not as bad as Mobil1
Redline - Burned oil...Not as bad as Royal Purple
Amsoil - No oil burned and runs smoother

Also, noticed slight lifter tick with all oils used after 2000+/- miles....also had track days in there as well....I have not had the car on the track since switching to Amsoil...but so far no tick.

Where can I buy amsoil?

04-11-2007, 10:02 AM	#1
pt518sti S204 Racer Car: 2005 White/Gold STi Fav Mod: TD06-20G/Tein Flex coilovers Location: New York Posts: 2,909 Join Date: May 2005 Trader Rating: (8)	Synthetic oil question I noticed a lot of people not happy with Mobil 1 synthetic oil on here, and a lot of people recommending either Royal Purple or Castrol Syntec. My question is why do so many of you that use Castrol Syntec use 0w-30 and not 5w-30, like what is recommended for our cars? It says right on Castrol website that 0w-30 is ideal for very cold conditions up to -40 degrees. Why not use 5w-30 which is the recommend grade for "normal" temperatures. I don't think that many of us live in Alaska where it would get down to -40 degrees outside.. This ad is not endorsed by this member. Please register or login to hide this ad.

04-11-2007, 10:11 AM	#2
mnsubaruboy Junior STI Driver Car: 05' OBP STi Fav Mod: race school Location: NW MN Posts: 180 Join Date: Sep 2006 Trader Rating: (0)	I just use 5w-30 all year round (Royal Purple) it gets mighty cold (recorded -50 some nights this winter) not sure why any warmer climate states would be using 0w-30? interested to find out

04-11-2007, 10:19 AM	#3
mccullpl Junior STI Driver Car: WRB 05 STi Location: Cedar Rapids, IA Posts: 115 Join Date: Jul 2004 Trader Rating: (0)	http://theoildrop.server101.com/foru...=0&Board=UBB51 Check out this forum. The part I linked you to is dedicated to the 0W-30 German Castrol that a lot of people like to use (I use it too). IIRC, the viscosity comes out to be on the high side for a 30 weight, and is an all around great oil. Plus, some people have solved their oil consumtion (sp?) problems by switching to it. BTW, the German Castrol is not the same as the US made stuff...unless they've changed the US stuff. Hope this helps! Pat

04-11-2007, 10:27 AM	#5
kts262 HowTo Contributor Car: 2008 DGM (BBS+Navi) Fav Mod: stock FTL? Location: College Park, MD Posts: 2,106 Join Date: Jan 2005 Trader Rating: (8)	Hopefully this gets moved into the Power + Performance forum so you can get more responses. The "German Castrol" 0w30 is what is used mostly in Europe. The Castrol 0w30 is a "thick" 30 weight which has had less issues with oil consumption then Mobil 1 5w30. While 5w30 is recommended 0w30, 10w30, etc will work just fine as well. A lot of tuners have actually recommended 40 weights in cars that have had some issues with oil consumption and it's helped. I'll probably be moving up to a 5w40 on my next oil change. While both the 0w30 Castrol and 530 Mobil 1 are both 30 weights they are actually at different ends of the 30 weight rating. The Mobil 1 is a "thin" 30 weight and is closer to a 20 weight whereas the Castrol is closer to a 40 weight. Check out http://www.bobistheoilguy.com/ and the forums on there for a TON of information about oil. I've been reading up on this since I've had some issues with my car and from running Mobil 1. I'm currently on Motul 8100 5w30 and my oil consumption has dropped significantly.

04-11-2007, 10:39 AM	#6
BlueGold Grassroots STI Racer Car: 05, Subaru Impreza W Location: Cincinnati Posts: 555 Join Date: Oct 2005 Trader Rating: (1)	I run 5w-30 Castrol Syntec oil and have not had any issues with oil consumption. However, several oil analyses have shown that this oil does not remain at 30w but, instead, wanders close to 20w. My next oil change is soon and I will once again get an analysis and will probably move to 40w. If the 40w doesn't stay 40w then I will probably switch brands.

04-11-2007, 12:44 PM	#7
pt518sti S204 Racer Car: 2005 White/Gold STi Fav Mod: TD06-20G/Tein Flex coilovers Location: New York Posts: 2,909 Join Date: May 2005 Trader Rating: (8)	Thanks for the advice and info, guys. I think I'm going to try that German Castrol 0w-30. I'm just hoping I can find it locally. PS: Mods, feel free to move this thread if it's in the wrong section. I wasn't sure exactly where it should go. Thanks

04-11-2007, 12:54 PM	#8
Rookie84 Spec C Club Car: '93 RX-7 Fav Mod: LS6 and T-56 swap :D Location: Columbus, OH/Northern VA Posts: 1,461 Join Date: Aug 2004 Trader Rating: (3)	I'm currently using Motul 300V and I'm loving it. The car runs so smooth and it was an unbelievable change coming from Mobil 1. Motul 8100 should be good enough and not as expensive as 300V. I heard that 300V is a bit of an overkill for the stock engine and 8100 is good enough. I'm just using 300V since I can get it at invoice.

04-11-2007, 01:11 PM	#9
KrazyKarl Professional STI Racer Car: '07 UGM STI Location: TX Posts: 729 Join Date: Nov 2005 Trader Rating: (0)	on my second change, i switched to castrol 0w30 because of all the good things i read on this forum. Havent burned a drop and my gas milage went up 2mpg consistantly.

04-11-2007, 01:24 PM	#10
blurred Junior STI Driver Car: 06 wrb/gold STI Fav Mod: for now? ownership!! Location: Toronto Posts: 150 Join Date: Jan 2006 Trader Rating: (0)	long read.... but very interesting none the less! http://ferrarichat.com/forum/showthread.php?t=136052 it persuaded me to try out the gc 0w30

04-11-2007, 02:25 PM	#11
jaydow11 Silver Member Car: 06 STI UGM Fav Mod: (o)(o) Location: Kelowna Posts: 1,093 Join Date: Jul 2006 Trader Rating: (0)	I use GC 0W-30 too!!! After switching from M1!

04-11-2007, 02:33 PM	#12
modaddict Spec C Club Car: 04 Crawford STi Fav Mod: CP35r 440whp Posts: 1,948 Join Date: Jun 2006 Trader Rating: (3)	I burn ZERO oil and use Mobil 1 5w-30, 3k oil changes. it helps to have the crawford performance air/oil separator. check this thread out: http://forums.nasioc.com/forums/show....php?t=1238027 here's my post in it: <hr style="color: rgb(16, 92, 168);" size="1"> <!-- / icon and title --> <!-- message --> Page 158 of 177: http://www.zag.si/~jank/public/bmw/oil_bible.pdf this is a copy of that page. this is for 5w-30 oil from highest to lowest ranking scores: Brand Product P/S/B API VI PP FP FRP HT/HS Noack TBN 4 Ball Phos Zinc CCS Ash Rev. SCORE AMSOIL XL7500 S SL/SJ 196 -60 453 482 3.10 8.80 10.1 0.38' - - 2320 @ -25 - Apr-03 765 Schaeffer Moly Pure S SJ 185 -60 465 500 3.80 13.00 8.0 - - - 2100 @ -25 0.90 ? 763 AMSOIL 5w30 S SL/CF 182 -60 446 - 3.50 6.90 11.0 0.35'' - - 2555 @ -25 ~1.0 Oct-01 759 AMSOIL XL7500 S SL/SJ 196 -60 444 468 3.10 8.80 10.1 0.38' - - 2320 @ -25 - Jul-02 756 AMSOIL S3000 S CH-4/SL 175 -60 446 482 3.50 8.60 12.0 0.39' - - 6131 @ -30 ~1.5 Jan-02 749 AMSOIL S3000 S CI-4/SJ 175 -60 446 482 3.50 8.60 12.0 0.39' - - 6131 @ -30 ~1.5 Jan-02 749 Havoline Synthetic S SL/CF 172 -44 471 - 2.90 10.00 8.6 - 980 1070 3700 @ -30 0.93 Sep-02 732 Exxon Superflo Syn. S SJ 159 -62 471 - 3.10 13.00 5.0 - - - 2200 @ -25 - Oct-99 725 Valvoline SynPower S SL/CF 173 -44 468 - 2.90 12.00 9.0 - 1000 - 4200 @ -30 1.10 Apr-02 725 Valvoline SynPower S SL/CF 173 -44 468 - 2.90 12.00 9.0 - 1000 - 4200 @ -30 1.10 Mar-03 725 Chevron Supreme Syn. S SL/CF 161 -62 464 - 2.90 13.00 9.0 - 920 1280 2400 @ -25 1.12 Oct-02 724 CAM2 Synavex S SL/SJ 175 -54 464 - 2.90 13.00 5.0 - - - 6600 @ -30 - ? 722 Havoline Energy P SJ 188 -54 450 - 2.95 14.50 5.0 - - - 6600 @ -30 - ? 718 Kendall Elite S SJ/CF 160 -54 468 - 3.10 13.00 5.0 - - - 3910 @ -30 - Sep-98 715 Kendall SHP S SJ/CF 160 -54 468 - 2.90 13.00 5.0 - - - 3820 @ -30 - Jul-00 711 Valvoline SynPower Racing S - 164 -49 468 - 2.90 13.00 5.0 - - - 2400 @ -25 - Oct-99 710 Red Line Passenger S SJ/CF 153 -49 455 - 2.90 6.00 5.0 - - - 3300 @ -25 - May-00 707 Valvoline HP Syn S SH/CD 164 -40 460 - 3.50 13.00 5.0 - 1200 1200 3300 @ -25 - Jul-98 705 Valvoline VR-1 Racing Syn S SH/CD 164 -40 460 - 3.50 13.00 5.0 - 1200 1200 3300 @ -25 - Jul-98 705 5w30 0w30 Appendix A CAM2 Full Synthetic S SJ/SH 160 -49 464 - 2.90 13.00 5.0 - - - 3000 @ -20 - ? 702 Petro Canada Synthetic PCMO S SL 169 -44 455 - 2.90 13.00 6.5 - 800 - 3920 @ -30 0.90 May-02 700 Castrol Syntec S SL/CF 172 -38 455 475 3.00 13.00 5.0 - 900 1000 2400 @ -25 0.90 2001 ? 696 Q. State Synthetic S SL/CF 177 -49 440 482 2.90 13.00 5.0 - - - 6600 @ -30 - Oct-02 695 Valvoline Durablend B SL/CD 161 -38 460 - 2.90 13.00 8.1 - 960 - 5800 @ -30 1.00 Apr-02 694 Neo Neo S SJ 170 -60 430 - 2.90 13.00 6.2 - - - 3000 @ -25 0.64 ? 691 Kendall GT-1 Synthetic S SL/CF 166 -38 446 - 3.10 13.00 7.9 - - 1000 4150 @ -30 1.00 Mar-02 689 Kendall SHP Syn S SL/CF 166 -38 446 - 3.10 13.00 7.9 - - 1000 4150 @ -30 1.00 Mar-02 689 Valvoline Special Syn. Racing S - 157 -40 460 - 2.90 13.00 5.0 - 1200 1200 5700 @ -30 - Mar-03 686 Petro Canada Blend PCMO B SL 162 -49 441 - 2.90 13.00 6.8 - 900 - 4130 @ -30 0.80 Mar-02 685 Conoco Syncon S SL/SJ 170 -45 440 - 2.90 13.00 5.0 - - - 6600 @ -30 - May-02 684 Mobil 1 SuperSyn S SL/CF 167 -49 435 - 3.08 13.00 5.0 - - - 6600 @ -30 1.20 Mar-03 684 Mobil 1 SuperSyn S SL/CF 167 -49 435 - 3.08 13.00 5.0 - - - 6600 @ -30 1.20 Jun-03 684 Havoline Petroleum P SL/SJ 159 -33 450 - 2.90 13.00 7.6 - 940 1030 5700 @ -30 0.90 Mar-03 676 Havoline Petroleum P SL/SJ 159 -33 450 - 2.90 13.00 7.6 - 940 1030 5700 @ -30 0.90 Jun-03 676 Chevron Supreme P SL/SJ 159 -33 450 - 2.90 13.00 7.4 - 940 1030 5700 @ -30 0.90 Mar-03 676 Chevron Supreme P SL/SJ 159 -33 450 - 2.90 13.00 7.4 - 940 1030 5700 @ -30 0.90 Jun-03 676 Castrol Syntec S SL/CF 171 -38 437 450 2.92 13.00 5.0 - 900 1100 6600 @ -30 - Jun-02 675 Chevron Supreme Syn. Blend B SL 159 -31 450 - 2.90 13.00 7.5 - 940 1030 5700 @ -30 0.90 Jun-03 674 Havoline Synthetic Blend B SL/SJ 159 -31 450 - 2.90 13.00 7.5 - 940 1030 5700 @ -30 0.90 Jun-03 674 Schaeffer Supreme 7000 B SL 180 - 448 485 3.50 13.00 7.1 - - - 5073 @ -30 0.86 Jul-02 673 TropArtic Synthetic S SL 158 -60 425 - 2.90 13.00 5.0 - - - 3100 @ -25 0.93 ? 672 Citgo SuperGard Blend B - 154 -27 455 - 3.20 13.00 5.0 - - - 5360 @ -30 - Dec-02 671 Q. State Synthetic S SJ/CF 151 -49 440 482 2.90 13.00 5.0 - - - 6600 @ -30 - May-01 669 Petro Canada Max MultiGrade P SL 160 -44 430 - 2.90 13.00 6.6 - - - 5000 @ -30 0.80 Feb-02 666 Petro Canada Supreme MultiGrade P SL 159 -44 430 - 2.90 13.00 6.8 - - - 4310 @ -30 0.80 Mar-02 666 Citgo SuperGard Blend B - 144 -33 446 - 3.30 13.00 5.0 - - - 2760 @ -25 - May-02 660 Q. State Higher Mileage P SJ 176 -43 410 - 2.90 13.00 5.0 - - - 7000 @ -25 - Sep-00 658 Pennzoil Multigrade P SL/SJ 160 -44 420 - 3.10 13.00 5.0 0.54' - - 6600 @ -30 - May-02 657 Pennzoil Multigrade P SL/SJ 160 -44 420 - 3.10 13.00 5.0 0.54' - - 6600 @ -30 - Nov-02 657 Exxon Superflo P SL/SJ 158 -22 442 - 3.10 13.00 5.0 - - - 6600 @ -30 0.74 Mar-03 655 Shell FormulaShell P SL/SJ 159 -42 421 - 2.90 13.00 6.9 - - 1110 6040 @ -30 0.91 Dec-02 655 Shell FormulaShell P SL/SJ 156 -42 421 - 2.90 13.00 6.9 - - 1110 6040 @ -30 0.91 2001 ? 652 Conoco Hydroclear Super P SL/SJ 158 -40 424 - 2.90 13.00 5.0 - - - 6150 @ -30 - Nov-01 651 76 Lubricants Super P SL 154 -38 420 - 3.10 13.00 6.2 - - 990 5450 @ -30 0.80 Jul-01 647 Motorcraft Super Premium P SJ 159 -40 410 - 3.20 13.00 6.7 - - - 6600 @ -30 0.86 ? 647 Kendall GT-1 P SL/SJ 152 -40 421 - 3.00 13.00 6.2 - - 1000 6500 @ -30 0.80 Mar-02 646 Kendall GT-1 Synthetic Blend B SL/SJ 157 -44 410 - 3.10 13.00 6.2 - - 1000 5500 @ -30 0.80 Mar-02 646 Castrol HIGH MILEAGE P SL/SJ 167 -27 415 415 3.30 13.00 5.0 - 1000 1100 6600 @ -30 - Jun-02 646 Royal Purple Multi-Grade S SL 161 - 455 480 2.90 13.00 5.0 - - - 6600 @ -30 - ? 645 Wolf's Head Super Duty P SL/SJ 162 -33 420 - 2.90 13.00 5.0 - - - 6600 @ -30 <.9 Jul-02 644 Torco MPZ Racing S SL/SJ 176 -40 397 430 2.90 13.00 5.2 - - - 2300 @ -25 - 2001 642 Appendix A Mystik JT-8 Premium P SL 162 -27 424 - 2.90 13.00 5.0 - - - 6480 @ -30 - Dec-02 642 Q. State HP Blend B SL/CF 165 -35 410 446 2.90 13.00 5.0 - - - 6600 @ -30 - Jun-00 639 Q. State Synthetic Blend B SL/CF 165 -35 410 446 2.90 13.00 5.0 - - - 6600 @ -30 - May-02 639 Royal Purple RP S SJ/CH-4 160 -44 395 435 2.90 13.00 10.5 - - - 6600 @ -30 - ? 639 Wolf's Head Super Duty P SL/SJ 157 -33 420 - 2.90 13.00 5.0 - - - 3330 @ -30 <.9 Oct-01 639 Q. State 4x4 Blend B SL 164 -44 400 460 2.90 13.00 5.0 - - - 6600 @ -30 - May-02 637 LE 8530 Monolec SPB B SJ 145 -40 420 - 2.90 13.00 6.2 - - - 6600 @ -30 0.64 ? 636 Valvoline All Climate P SL/SJ 162 -38 403 - 2.90 13.00 7.0 - 900 1050 6000 @ -30 0.80 Apr-02 636 Castrol Syntec Blend B SL/SJ 160 -27 415 415 3.10 13.00 5.0 - 1000 1100 6600 @ -30 - Jun-02 635 Exxon Superflo P SL/SJ 157 -33 410 - 3.20 13.00 5.0 - - - 6029 @ -30 - Oct-01 635 Kendall Victory B SJ 157 -38 410 - 2.90 13.00 5.0 - - - 5510 @ -30 0.60 Aug-00 634 Mystik JT-8 Premium P SJ/CF 162 -33 410 - 2.90 13.00 5.0 - - - 3400 @ -25 - Oct-00 634 Castrol Syntec Blend B SL/SJ 156 -36 410 430 3.00 13.00 5.0 - 900 900 3200 @ -25 1.00 2001 ? 633 Citgo SuperGard P SL 154 - 442 - 3.20 13.00 5.0 - - - 5810 @ -30 - Jul-00 631 Citgo SuperGard P SL 154 - 442 - 3.20 13.00 5.0 - - - 5810 @ -30 - Dec-02 631 Q. State 4x4 Blend B SJ/SH 158 -44 400 460 2.90 13.00 5.0 - - - 6600 @ -30 - Feb-01 631 Castrol GTX P SL/SJ 160 -27 410 430 3.00 13.00 5.0 - 900 1000 3100 @ -25 0.90 2001 ? 628 Q. State HP Blend B SJ/CF 152 -35 410 446 2.90 13.00 5.0 - - - 6600 @ -30 - Jun-00 626 Walmart SuperTech Blend B SJ/CF 152 -35 410 446 2.90 13.00 5.0 - - - 3500 @ -25 - Sep-01 626 Mobil Drive Clean Plus B SL/CF 159 -44 392 - 2.90 13.00 5.0 - - - 5896 @ -30 - Apr-03 624 Mobil Drive Clean Plus B SL/CF 159 -44 392 - 2.90 13.00 5.0 - - - 5896 @ -30 - Jun-03 624 TropArtic Conventional P SL 155 -30 410 - 2.90 13.00 5.0 - - - 4688 @ -30 - ? 624 TropArtic Conventional P SL 155 -30 410 - 2.90 13.00 5.0 - - - 4688 @ -30 0.80 ? 624 Walmart SuperTech P SL/SJ 155 -35 405 430 2.90 13.00 5.0 - - - 3500 @ -25 - Sep-01 624 Superior Lub. PCMO P SJ 154 -35 405 - 2.90 13.00 5.0 - - - 3300 @ -20 1.00 ? 623 Schaeffer Micron Moly P SL 159 - 424 455 3.20 13.00 7.1 - - - 6000 @ -30 0.86 Jun-02 622 Synergyn Racing Oil S - 156 -30 406 - 2.90 13.00 5.0 - - - 6600 @ -30 - ? 621 Castrol GTX P SL/SJ 160 -27 400 430 3.10 13.00 5.0 - 1000 1100 6600 @ -30 - Jun-02 620 Q. State Multigrade P SL/SJ 159 -27 405 430 2.90 13.00 5.0 - - - 6600 @ -30 - Oct-01 620 Q. State Peak Performance P SL/SJ 159 -27 405 430 2.90 13.00 5.0 - - - 6600 @ -30 - Jan-02 620 Spectro Spectro4 P SH 151 -29 410 - 2.90 13.00 5.0 - - - 6600 @ -30 - ? 619 Kendall Superb 100 P SJ 155 -38 396 - 2.90 13.00 5.0 - - - 5900 @ -30 - Jun-00 618 Mobil Drive Clean P SL/SJ 159 -38 392 - 2.90 13.00 5.0 - - - 5500 @ -30 - Apr-03 618 Mobil Drive Clean P SL/SJ 159 -38 392 - 2.90 13.00 5.0 - - - 5500 @ -30 - Jun-03 618 Kendall GT-1 P SJ 154 -38 396 - 2.90 13.00 5.0 - - - 5900 @ -30 - Jul-00 617 Mobil Drive Clean Blend B SL/CF 156 -39 392 - 2.90 13.00 5.0 - - - 5000 @ -30 - May-02 616 Shell FormulaShell Syn S SL/CF - -35 440 - 2.90 13.00 5.0 - - - 4300 @ -30 - Jul-03 504 Valvoline Maxlife P SL/SJ - -38 430 - 2.90 13.00 8.0 - 950 1080 6600 @ -30 - Apr-02 503 Lyondell Supreme P SJ - -40 396 - 2.90 13.00 5.0 - - - 3100 @ -25 - Dec-00 465 Pennzoil Synthetic S SJ 159 -54 - - 3.05 6.90 5.0 - - - 2000 @ -25 - May-00 263 Pennzoil Synthetic S SL 176 -54 - - 3.07 13.00 5.0 - - - 6600 @ -30 - Jan-03 262 Pennzoil Synthetic Blend B SJ 155 -49 - - 3.00 13.00 5.0 - - - 3300 @ -25 - Aug-00 235 Appendix A Pennzoil High Mileage P SL/SJ 165 -27 - - 3.30 13.00 5.0 - - - 7000 @ -30 - Dec-02 229 CAM2 Earth Friendly P SJ/SH 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Apr-97 228 CAM2 Magnum HD P SJ/SH 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Aug-02 228 CAM2 Magnum Plus P SJ/SH 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Apr-97 228 CAM2 Magnum XHD P SL/SJ 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 0.60 Aug-02 228 CAM2 SuperPro P SL/SJ 155 -44 - - 2.90 13.00 5.0 - - - 6600 @ -30 - Oct-02 228 Pennzoil Synthetic Blend B SL 158 -33 - - 3.00 13.00 5.0 - - - 6600 @ -30 - Jan-02 222 RANKING

04-11-2007, 03:07 PM	#14
TucsonSTi Amateur STI Driver Car: 06 STi Fav Mod: Heavy right foot Location: In the Desert Posts: 37 Join Date: Jun 2006 Trader Rating: (0)	I have used: Mobil1 - Burned oil Royal Purple - Burned oil...not as bad as Mobil1 Redline - Burned oil...Not as bad as Royal Purple Amsoil - No oil burned and runs smoother Also, noticed slight lifter tick with all oils used after 2000+/- miles....also had track days in there as well....I have not had the car on the track since switching to Amsoil...but so far no tick.