Thinking of switching to Amsoil. Which weight to use?

SLY STi · 06-23-2008, 09:21 PM

Car is stage 2 with 40k miles. I have changed the oil once since I have owned the car, with the recommended Valvoline 5w30 and a Subaru oil filter.

After trolling almost every oil thread I could find, I am looking to switch to Amsoil.

I drive the car very hard, and it will see a road course or 2 this summer. I live in Chicago, which gets very hot and very humid in the summer.

Should I go with Amsoil's 5w30, or 5w40 weight oil and why?

Thanks!

n2oiroc · 06-24-2008, 03:36 AM

they make a 0W40 labeled as a powersports oil, but its a very heavy duty oil that works great in our cars.

Tbagger · 06-24-2008, 04:05 AM

i stick with 5w30, it's what was in the car when I bought it and it's what the owners manual and oil filler cap says to use.

BlueGold · 06-24-2008, 04:35 AM

I'm running Amsoil Synthetic 5W-40 European Engine Oil and will have an oil analysis on this oil within the next few months.

**FlyingPerformance** · 06-24-2008, 05:31 AM

5w-30 ASL as well as an AEO-13 filter. The AEO-12 is the "correct" filter for our cars based on the book, but the AEO-13 filter has the same thread pitch as well as the same diameter, it is about 1.5" longer though.

upncummr · 06-24-2008, 05:37 AM

I've previously used the Series 2000 0W-30 Racing Oil and been very pleased with it. However, yesterday I tried to order two more cases on the Amsoil web site and it's no longer being offered.

They're now offering their Signature Series 0W-30 oil and touting it's extended drain intervals which are of no interest to me.

Here's the info I got from their Technical Service Representative.

The Signature Series is not specifically a racing oil. Right now the only race specific oils we offer are the [FONT='Arial Narrow','sans-serif']Series 2000 Synthetic 20W-50 Racing Oil [/font][FONT='Arial Narrow','sans-serif'] (Product Code: TRO) and the [/font][FONT='Arial Narrow','sans-serif']Super Heavy Weight SAE 60 Racing Oil (Product Code AHR). We are introducing some new racing oils in the near future but I don’t have the specs on them yet.[/font]

[FONT='Arial Narrow','sans-serif']So now I need to do some research and figure out if I can use the 20W-50 Racing Oil instead of the traditional 0W-30 Racing Oil.[/font]
[FONT='Arial Narrow','sans-serif'][/font]
[FONT='Arial Narrow','sans-serif']Gary[/font]

SLY STi · 06-24-2008, 05:37 AM

Quote:

Originally Posted by BlueGold

I'm running Amsoil Synthetic 5W-40 European Engine Oil and will have an oil analysis on this oil within the next few months.

I would be really interested in reading about your UOA when it is complete. How do you drive you car though? Does it see any track events?

SLY STi · 06-24-2008, 05:46 AM

Quote:

Originally Posted by FlyingPerformance

5w-30 ASL as well as an AEO-13 filter. The AEO-12 is the "correct" filter for our cars based on the book, but the AEO-13 filter has the same thread pitch as well as the same diameter, it is about 1.5" longer though.

You mean EAO, not AEO.

**FlyingPerformance** · 06-24-2008, 05:48 AM

Quote:

Originally Posted by SLY STi

You mean EAO, not AEO.

Yea, its to early to be at work, my dyslexia wears off after lunch usually.

**boondocksaint** · 06-24-2008, 06:18 AM

I have used a few oils, but all 5w-30. I just switched to Amsoil 5w-30. I have a track day in July and will have it changed thereafter and analyzed by Blackstone (yes, I'm a geek, I have all my oil changes analyzed by Blackstone). I have the last change's sample in the car right now... I'll be posting results in my journal.

white04sti · 06-24-2008, 06:50 AM

Amsoil 5w-30

MGizzle · 06-29-2008, 10:53 AM

Boony, I am looking forward to you report. I am currently thinking of switching to AMSOIL as well but the dealer guy keeps telling me to go to the 10W-50 because of the engine being turbocharged.

Anyhow, I'll see you next week at Waterford I guess. Later man.

M3EvoBR · 06-29-2008, 11:37 AM

I always though that 0W30 would be for cold weather. I use Motul300V 10W60 it's synthetic Esther based endurance race oil.

Never had a problem with it for a long time in my Euro spec M3, my GT and an Evo VIII

EROCK11 · 06-29-2008, 12:06 PM

I have been using their 5w-30 for about a year now without complaint.

wrxcelration · 06-30-2008, 06:47 PM

Ive been told to run the 10w30 as well.This will be my 1st change tomorrow since putting in the amsoil. No burning at all. Motor tick has increase slightly

06-23-2008, 09:21 PM	#1
SLY STi Junior STI Driver Car: 2005 STi Fav Mod: T-Tops Posts: 160 Join Date: Apr 2008 Trader Rating: (0)	Thinking of switching to Amsoil. Which weight to use? Car is stage 2 with 40k miles. I have changed the oil once since I have owned the car, with the recommended Valvoline 5w30 and a Subaru oil filter. After trolling almost every oil thread I could find, I am looking to switch to Amsoil. I drive the car very hard, and it will see a road course or 2 this summer. I live in Chicago, which gets very hot and very humid in the summer. Should I go with Amsoil's 5w30, or 5w40 weight oil and why? Thanks! This ad is not endorsed by this member. Please register or login to hide this ad.

06-24-2008, 03:36 AM	#2
n2oiroc Grassroots STI Racer Car: 07 sti Fav Mod: whats a mod? Location: milwaukee, wi Posts: 578 Join Date: Feb 2007 Trader Rating: (3)	Re: Thinking of switching to Amsoil. Which weight to use? they make a 0W40 labeled as a powersports oil, but its a very heavy duty oil that works great in our cars.

06-24-2008, 04:05 AM	#3
Tbagger Spec C Club Car: 06 STi WRB Location: MASS-HOLE Posts: 1,707 Join Date: Aug 2006 Trader Rating: (1)	Re: Thinking of switching to Amsoil. Which weight to use? i stick with 5w30, it's what was in the car when I bought it and it's what the owners manual and oil filler cap says to use.

06-24-2008, 04:35 AM	#4
BlueGold Grassroots STI Racer Car: 05, Subaru Impreza W Location: Cincinnati Posts: 554 Join Date: Oct 2005 Trader Rating: (1)	Re: Thinking of switching to Amsoil. Which weight to use? I'm running Amsoil Synthetic 5W-40 European Engine Oil and will have an oil analysis on this oil within the next few months.

06-24-2008, 05:31 AM	#5
FlyingPerformance Authorized Vendor Car: 2008 STI Fav Mod: Coming Soon Location: Austin, TX Posts: 378 Join Date: May 2008 Trader Rating: (9)	Re: Thinking of switching to Amsoil. Which weight to use? 5w-30 ASL as well as an AEO-13 filter. The AEO-12 is the "correct" filter for our cars based on the book, but the AEO-13 filter has the same thread pitch as well as the same diameter, it is about 1.5" longer though.

06-24-2008, 05:37 AM	#6
upncummr Spec C Club Car: '05 CGM Fav Mod: HPDEs Location: Omaha, Nebraska Posts: 1,117 Join Date: May 2006 Trader Rating: (3)	Re: Thinking of switching to Amsoil. Which weight to use? I've previously used the Series 2000 0W-30 Racing Oil and been very pleased with it. However, yesterday I tried to order two more cases on the Amsoil web site and it's no longer being offered. They're now offering their Signature Series 0W-30 oil and touting it's extended drain intervals which are of no interest to me. Here's the info I got from their Technical Service Representative. The Signature Series is not specifically a racing oil. Right now the only race specific oils we offer are the [FONT='Arial Narrow','sans-serif']Series 2000 Synthetic 20W-50 Racing Oil [/font][FONT='Arial Narrow','sans-serif'] (Product Code: TRO) and the [/font][FONT='Arial Narrow','sans-serif']Super Heavy Weight SAE 60 Racing Oil (Product Code AHR). We are introducing some new racing oils in the near future but I don’t have the specs on them yet.[/font] [FONT='Arial Narrow','sans-serif']So now I need to do some research and figure out if I can use the 20W-50 Racing Oil instead of the traditional 0W-30 Racing Oil.[/font] [FONT='Arial Narrow','sans-serif'][/font] [FONT='Arial Narrow','sans-serif']Gary[/font]

06-24-2008, 06:18 AM	#10
boondocksaint Moderator (v0.9 Beta) Car: Boony's Motown STi Fav Mod: banhammer Location: with the Stanley Cup Posts: 22,232 Join Date: Jun 2006 Trader Rating: (5)	Re: Thinking of switching to Amsoil. Which weight to use? I have used a few oils, but all 5w-30. I just switched to Amsoil 5w-30. I have a track day in July and will have it changed thereafter and analyzed by Blackstone (yes, I'm a geek, I have all my oil changes analyzed by Blackstone). I have the last change's sample in the car right now... I'll be posting results in my journal.

06-24-2008, 06:50 AM	#11
white04sti Professional STI Driver Fav Mod: topspeed protuned Location: miami FL Posts: 498 Join Date: Nov 2005 Trader Rating: (6)	Re: Thinking of switching to Amsoil. Which weight to use? Amsoil 5w-30

06-29-2008, 10:53 AM	#12
MGizzle Professional STI Racer Car: 05 STi OBP Fav Mod: Data Acq System Location: Warren, Michigan Posts: 773 Join Date: Jul 2006 Trader Rating: (1)	Re: Thinking of switching to Amsoil. Which weight to use? Boony, I am looking forward to you report. I am currently thinking of switching to AMSOIL as well but the dealer guy keeps telling me to go to the 10W-50 because of the engine being turbocharged. Anyhow, I'll see you next week at Waterford I guess. Later man.

06-29-2008, 11:37 AM	#13
M3EvoBR Lurker Car: Silver 00 GT Fav Mod: Coming Soon Location: Brazil Posts: 3 Join Date: Jun 2008 Trader Rating: (0)	Re: Thinking of switching to Amsoil. Which weight to use? I always though that 0W30 would be for cold weather. I use Motul300V 10W60 it's synthetic Esther based endurance race oil. Never had a problem with it for a long time in my Euro spec M3, my GT and an Evo VIII

06-29-2008, 12:06 PM	#14
EROCK11 Silver Member Car: 05 WRB STi and 06 Spec B Fav Mod: Seb's Stromung! Location: CT Posts: 484 Join Date: Oct 2005 Trader Rating: (4)	Re: Thinking of switching to Amsoil. Which weight to use? I have been using their 5w-30 for about a year now without complaint.

06-30-2008, 06:47 PM	#15
wrxcelration Spec C Club Car: 05 STi Fav Mod: 57fs Location: Allentown PA Posts: 1,089 Join Date: Jul 2007 Trader Rating: (4)	Re: Thinking of switching to Amsoil. Which weight to use? Ive been told to run the 10w30 as well.This will be my 1st change tomorrow since putting in the amsoil. No burning at all. Motor tick has increase slightly This ad is not endorsed by this member. Please register or login to hide this ad.