hey guys,

Im about to do a major service on my 2001 wrx, although iv lost my service book with all the correct oils and fluids to use... anyone know what diff and gearbox fluid to use... i hear i need combined the gear fluid with the diff fluid for the diff or vice versa...

Gearbox (Manual transmission and front differential) = SAE 75/90 ( CASTROL MULTITRAX )
Rear Diff = SAE 80W/90 ( CASTROL EPX )

excellent, cheers for that mate... so the front and rear differential use different fluids... thanks... ideas on a good engine oil, was thinking motul 4100 turbolight 10w40...

^ That's a good question mate! A very arguable topic: Engine Oil Recommendations Thread. Many on here use Turbolight and recommend it. It is also highly recommended by Tenagah Motorsports for street/light track work.

If your car is turbo, recommend using a full synthetic oil, i use penrite 10w40 on older rexys, and 5w30 on the newer ones.

Well, you can get seriously flamed on this forum for recomending a brand of motor oil,
I can recomend that you do a search and have a good read of all the threads on motor oils on here and decide for yourself which you will use.
for a street only car you cant go too wrong with any of the brands and weights mentioned on the forum.

I distinctly remember someone telling me motul turbolight 4100 is bad for a modified wrx as its too thin. I put this question to my mechanic and he said he uses it in his rally car.

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