Tranny Oil advise on STi 6MT - Page 5

dobie0791 · 02-01-2006, 08:46 PM

i would stick with the 75w-90 valvoline.
i put redline 75w-90 redline mt-90 in my truck's tranny (i got it for under $4 a quart from a friend in the biz). it was fine for the first 3-4K- since then, i have gotten a slight grind going into 2nd,3rd, and 5th gears at times. this is not power shifting- it's a 22-re for god's sake! it started out ok, but has gotten progressively worse.
there never was an issue with the valvoline run at 30K intervals up until the time i switched at 90K miles.
next change in the truck= dino. i'll stick with dino in the car, too.

salaki · 02-01-2006, 09:57 PM

That's what I stick w/ too - 75w 90 Valvoline.
I read too much and can never find complain about the Valvoline 75w 90 on the STi combined w/ Subaru Rear LSD fluid

Rootus · 02-03-2006, 07:06 AM

I wish the Suby tranny was designed for ATF. Synchromesh is terrific fluid.

traction_issuez · 02-03-2006, 07:34 AM

i am using redline 75w 90, and i was at LICmotorsports, they said that for a street car redline gear oil would be too strong/thin because it's bad for the sychros - subaru transmission needs a little bit friction, they say to run well. It's great for race cars but then again they change their oil like every other track day. I was recomended swepco ( http://www.swepcousa.com/lubesite/gear.htm) and that's what they run in their street/track car.

-mike

Rev · 02-03-2006, 07:52 AM

Next tranny oil change, Valvoline 75W-90 dino ... after that I will go back to Motul G300

solbergfan · 02-03-2006, 08:09 AM

Quote:

Originally Posted by Rootus

I wish the Suby tranny was designed for ATF. Synchromesh is terrific fluid.

WTF??

Rootus · 02-03-2006, 04:36 PM

Quote:

Originally Posted by solbergfan

WTF??

WTF the WTF?

boostedrex05 · 02-05-2006, 06:23 AM

lol idk what redline oil you guys run i run mt90 in my tranny it's deff got friction if i dont let my car warm up it's a ***** to get in gear never had a grinding problem i also have the redline frition modifier in my tranny and rear diff my guess is you got the wrong redline stuff for your need'shttp://www.cobbtuning.com/tech/gearoil/index.html
there you go wiltson read it n wheap i trust cobb very much.......

whitson01 · 02-06-2006, 11:46 PM

just to let you guys know, i called subaru of gwinnette (SOG) per scott segel's advice and ordered a quart of rear diff fluid.. they stock it.. very helpful and knew right away what i was talking about.. i wish they were my local dealer!!!

Brahmzy · 02-07-2006, 04:50 PM

Is it safe to say that Redline 75W90NS will work fine in both the tranny and the rear diff? This IS what COBB recommends...but I don't want to jack anything up and am tempted to stick with the stock Valvoline stuff.

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02-01-2006, 08:46 PM	#41
dobie0791 Junior STI Driver Feedback Score: 0 reviews Car: 05 PSM STi Location: Nor Cal Posts: 132 IWSTI Addict since: Oct 2004	i would stick with the 75w-90 valvoline. i put redline 75w-90 redline mt-90 in my truck's tranny (i got it for under $4 a quart from a friend in the biz). it was fine for the first 3-4K- since then, i have gotten a slight grind going into 2nd,3rd, and 5th gears at times. this is not power shifting- it's a 22-re for god's sake! it started out ok, but has gotten progressively worse. there never was an issue with the valvoline run at 30K intervals up until the time i switched at 90K miles. next change in the truck= dino. i'll stick with dino in the car, too.

02-01-2006, 09:57 PM	#42
salaki Professional STI Driver Feedback Score: 0 reviews Car: WRB STi - WRR 92X Location: DFW & CGK Posts: 494 IWSTI Addict since: Sep 2003	That's what I stick w/ too - 75w 90 Valvoline. I read too much and can never find complain about the Valvoline 75w 90 on the STi combined w/ Subaru Rear LSD fluid

02-03-2006, 07:06 AM	#43
Rootus S204 Racer Feedback Score: 1 reviews Car: 2006 STI Fav Mod: Recaros Location: Mahan, OR Posts: 2,921 IWSTI Addict since: Sep 2005	I wish the Suby tranny was designed for ATF. Synchromesh is terrific fluid.

02-03-2006, 07:34 AM	#44
traction_issuez STI Driver Feedback Score: 0 reviews Car: 05STi Fav Mod: None Location: Texas Posts: 291 IWSTI Addict since: Apr 2004	i am using redline 75w 90, and i was at LICmotorsports, they said that for a street car redline gear oil would be too strong/thin because it's bad for the sychros - subaru transmission needs a little bit friction, they say to run well. It's great for race cars but then again they change their oil like every other track day. I was recomended swepco ( http://www.swepcousa.com/lubesite/gear.htm) and that's what they run in their street/track car. -mike

02-03-2006, 07:52 AM	#45
Rev STI Guru Feedback Score: 0 reviews Car: 06 V70R Location: Hoffman Estates, IL Posts: 5,542 IWSTI Addict since: Dec 2003	Next tranny oil change, Valvoline 75W-90 dino ... after that I will go back to Motul G300

02-05-2006, 06:23 AM	#48
boostedrex05 Spec C Club Feedback Score: 1 reviews Car: Gt35R STi Fav Mod: JrTuned FTW Bro Location: Best ET 10.90 StockMotor Posts: 1,375 IWSTI Addict since: Dec 2005	lol idk what redline oil you guys run i run mt90 in my tranny it's deff got friction if i dont let my car warm up it's a ***** to get in gear never had a grinding problem i also have the redline frition modifier in my tranny and rear diff my guess is you got the wrong redline stuff for your need'shttp://www.cobbtuning.com/tech/gearoil/index.html there you go wiltson read it n wheap i trust cobb very much.......

02-06-2006, 11:46 PM	#49
whitson01 Spec C Club Feedback Score: 3 reviews Car: 06 acura tsx Fav Mod: soon to come Location: east TN Posts: 1,418 IWSTI Addict since: Dec 2004	just to let you guys know, i called subaru of gwinnette (SOG) per scott segel's advice and ordered a quart of rear diff fluid.. they stock it.. very helpful and knew right away what i was talking about.. i wish they were my local dealer!!!

02-07-2006, 04:50 PM	#50
Brahmzy Spec C Club Feedback Score: 0 reviews Location: C/S,CO Posts: 1,158 IWSTI Addict since: Dec 2004	Is it safe to say that Redline 75W90NS will work fine in both the tranny and the rear diff? This IS what COBB recommends...but I don't want to jack anything up and am tempted to stick with the stock Valvoline stuff.