Tranny Oil advise on STi 6MT - Page 2

Singletrack · 10-23-2005, 06:15 PM

Quote:

Originally Posted by salaki

So this one is really necessary for rear diff?
Does Napa carry this one instead of dealer?

I went with it because it is what subaru recommends, I'm not qualified to say if other substitutes are acceptable. Napa definitely doesn't carry it as it is a subaru product. In fact, my local dealer didn't have it in stock, and apparently has NEVER had it in stock. Makes you wonder what they put in people's STi's...I ordered it from subaruparts.com which is just an online subaru dealership (with the lowest prices).

**Wazazell** · 10-24-2005, 05:40 AM

Quote:

Originally Posted by Singletrack

In fact, my local dealer didn't have it in stock, and apparently has NEVER had it in stock. Makes you wonder what they put in people's STi's...

Same thing happened to me. Idiot behind the parts counter tried to tell me the STi gear oil is synthetic, which I know for a fact it is NOT!! This is after he told me he didn't even know the STi had a 6 speed!

OEM transmission fluid part number

klaymon · 10-24-2005, 06:47 AM

I'm on my second day of having Valvoline 80w-90 dino oil in the tranny and I have to say it shifts better now than it ever did with the Motul. No grinding or hesitation getting into gear. From now on, it's dino for me.

91TB78 · 10-24-2005, 11:01 AM

Quote:

Originally Posted by klaymon

I'm on my second day of having Valvoline 80w-90 dino oil in the tranny and I have to say it shifts better now than it ever did with the Motul. No grinding or hesitation getting into gear. From now on, it's dino for me.

Klaymon,
Any reason you went with Valvoline 80W-90? Or, was this a typing error and you meant to type 75W-90?

Rev · 10-24-2005, 11:07 AM

Quote:

Originally Posted by klaymon

Just my opinion, I'm not a fan of the Motul 300 synthetic. I've had mine in for about 7000 miles and I've been getting some 3rd gear grind. I'm going to go back to dino here shortly and see if it clears up.

I've been using Motul Gear300 for the last 22,000 miles ... I only get a slight grind on 3rd when the tranny is still cold, or when shifting really fast, which I don't do that regularly, but still bugs me.

So next time, Valvoline dino 75W-90 for me as well.

**Wazazell** · 10-24-2005, 11:25 AM

Quote:

Originally Posted by 91TB78

Klaymon,
Any reason you went with Valvoline 80W-90? Or, was this a typing error and you meant to type 75W-90?

Like me, he probably went to Advance, where the only 75W-90 is some no-name crap or synthetic. The only Valvoline I found there was 80W-90, so I got it. It's still within Subaru specs, and I was just topping off, so it isn't a problem.

91TB78 · 10-24-2005, 11:34 AM

Oh, I see.

Yeah, I wouldn't think the 80W-90 would be a big problem, except maybe in extreme cold climates where the cold weight may matter. In your case of just topping it off, neglible at best

klaymon · 10-24-2005, 12:08 PM

Quote:

Originally Posted by Wazazell

Like me, he probably went to Advance, where the only 75W-90 is some no-name crap or synthetic. The only Valvoline I found there was 80W-90, so I got it. It's still within Subaru specs, and I was just topping off, so it isn't a problem.

Exactly. If you look in the owner's manual, it lists different weights and what temp ranges they're recommended for. 80W-90 fits right in there for the temps I see in Ohio.

salaki · 10-24-2005, 12:11 PM

Thanks a lot guys for the inputs.

I'll be getting the Valvoline dyno oil w/ Subaru's rear diff before the track day this Nov..

blackie1969 · 01-19-2006, 12:24 PM

Sweet thread. Thanks to all of you who have taken the time to fill in the gaps for me. I'm just a hair over 30k and need to change my tranny fluid...

Interestingly, when I went in for my 15k service check, the guy at the service desk said they (Gillman Subaru) could NOT change the fluid in the STi because it was a six speed...strange enough.

Cheers!

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10-24-2005, 06:47 AM	#13
klaymon S204 Racer Feedback Score: 1 reviews Posts: 3,071 IWSTI Addict since: Jul 2004	I'm on my second day of having Valvoline 80w-90 dino oil in the tranny and I have to say it shifts better now than it ever did with the Motul. No grinding or hesitation getting into gear. From now on, it's dino for me.

10-24-2005, 11:34 AM	#17
91TB78 S204 Racer Feedback Score: 12 reviews Car: 06 IX MR Location: Minneapolis, MN Posts: 3,666 IWSTI Addict since: Mar 2002	Oh, I see. Yeah, I wouldn't think the 80W-90 would be a big problem, except maybe in extreme cold climates where the cold weight may matter. In your case of just topping it off, neglible at best

10-24-2005, 12:11 PM	#19
salaki Professional STI Driver Feedback Score: 0 reviews Car: WRB STi - WRR 92X Location: DFW & CGK Posts: 494 IWSTI Addict since: Sep 2003	Thanks a lot guys for the inputs. I'll be getting the Valvoline dyno oil w/ Subaru's rear diff before the track day this Nov..

01-19-2006, 12:24 PM	#20
blackie1969 Junior STI Driver Feedback Score: 0 reviews Car: 05 STi, Black Fav Mod: Graduating from college, and falling in love with turbines...big and small. Location: Houston, Tx Posts: 73 IWSTI Addict since: Nov 2005	Sweet thread. Thanks to all of you who have taken the time to fill in the gaps for me. I'm just a hair over 30k and need to change my tranny fluid... Interestingly, when I went in for my 15k service check, the guy at the service desk said they (Gillman Subaru) could NOT change the fluid in the STi because it was a six speed...strange enough. Cheers!