Diff oil recommendation.

[Thingfish]

Subaru R180 limited slip, street/auto-x. Factory calls for 75/90 GL-5. Car sees Temps in excess of 115f ambient in the summer, and sees temps well below zero in the mountains.
Car makes substantially more power than stock. Capacity is a hair over 1 qt.

If you could put in any gear oil, at any price, from any blender, what would it be.

 

[killagt]

Mobil 1

 

[d00df00d]

Motul Gear Competition FF.

 

[Billbert]

Redline 75w90 GL-5+

 

[Thingfish]

Schaeffer's 167 moly?
Amsoil SVT?
NEO 75/90 RHD?
Lubro-Moly?
RLI?
ELF TransElf?

 

[Boomer]

Mobil 1. Serves me very well in my Frontier hauling loads and running at highway speeds summer and winter.

 

[aquariuscsm]

Amsoil here.

 

[DieselTech]

Redline!!

 

[Pablo]

Seems like you would want something at the high end of 90, but not want a 140.

Amsoil SVT 75W-110 Link to SVT 75W-110

 

[ryan2022]

x2 on the amsoil severe gear 75w110. Its a great comprimise. I'm not sure why more companies haven't gotten into this weight.

 

[JHZR2]

Originally Posted By: Pablo
Seems like you would want something at the high end of 90, but not want a 140.

Amsoil SVT 75W-110 Link to SVT 75W-110


agree on that. The op can do a search on the basis of the 110 diff fluids, which is, IMO the best fit given the definition of the vehicle and its operation.

 

[unDummy]

ANY full synthetic in either 75w140 or 75w110(you can mix 90 and 140 together).

 

[dailydriver]

Originally Posted By: JHZR2
Originally Posted By: Pablo
Seems like you would want something at the high end of 90, but not want a 140.

Amsoil SVT 75W-110 Link to SVT 75W-110


agree on that. The op can do a search on the basis of the 110 diff fluids, which is, IMO the best fit given the definition of the vehicle and its operation.


I also agree on this stuff (oh, how I wish I could use it with my Eaton (carbon fiber clutch pack) Posi!!!), as long as you can use a synthetic gear oil in the Scooby's diff(s).
What type diff(s) is/are it/they??
What does Subie (or the mfg., if it is a performance aftermarket company's l.s.) say about synthetics???

 

[Thingfish]

They are AP Suretrac diffs. There has been SVT in it for almost 2 years now, and I have used the Severe Gear and FGR in more Subie diffs than I can remember. ( I am our local clubs "Amsoil guy")

Our local dealer installs syth fluids there. ( They sell Motul and Eneos )

 

[dailydriver]

Originally Posted By: Thingfish
They are AP Suretrac diffs. There has been SVT in it for almost 2 years now, and I have used the Severe Gear and FGR in more Subie diffs than I can remember. ( I am our local clubs "Amsoil guy")

Our local dealer installs syth fluids there. ( They sell Motul and Eneos )


COOL!
Did Prodrive use AP diffs in the WRC cars when they were still building them and in the series??

 

[Ben99GT]

Redline 75W-90 or Heavy Shockproof

 

[Thingfish]

Originally Posted By: dailydriver
Originally Posted By: Thingfish
They are AP Suretrac diffs. There has been SVT in it for almost 2 years now, and I have used the Severe Gear and FGR in more Subie diffs than I can remember. ( I am our local clubs "Amsoil guy")

Our local dealer installs syth fluids there. ( They sell Motul and Eneos )


COOL!
Did Prodrive use AP diffs in the WRC cars when they were still building them and in the series??


Yes, this is an RA / Prodrive six speed.

Google the trans tag.
http://i50.tinypic.com/2s6ng5c.jpg

 

[Thingfish]

SO, out of every fluid available, anywhere, at any cost, the fluid that is already in the diff if the one that seems to be the best.... lol

 

[wlyszkow]

Check it there..
http://www.amsoil.com/products/gearlubes/WhitePaper.aspx
My AMSOIL traveled about 10k miles but it was worth it.. ;-)