I was going to change the oil on the rear diff and gearbox and found this would it be suitable for my car and could i use it for both the diff and gearbox
Millers CRX 75w90 Full Synthetic Gear Oil 5lt

Car is a 1996 classic import wrx

steve

 

I won't say that you can't use it, but the recommended oil is Castrol Syntrax 75w90 for both the box & rear diff.

 

Millers is as good as you can get-most of the guys I know use it

 

im sure millers is well up to the standard of Castrol Syntrax

 

Yea I'm sure it's a good oil, but if you get problems with difficult gear selection or crunching gears then swap to the Castrol as it has an addative in it for the baulk rings.

 

maybe i will put the castrol in first ha ha

 

Can it be used in lsd rear diffs it's just some ppl recommend to purchase an actual lsd oil for the diff??

 

Most Subaru's run a viscous LSD at the rear, in which case, yes, Syntrax is the recommended oil.

If you have the race/rally "Plate Type" rear diff then you should run an LS type oil such as an EP 90LS

If your rear diff tends to bang & clatter when you turn a corner at slow speed then you have the plated set up, if on the other hand your diff is silent & it doesn't sound like it's trying to escape from the casing, you have a viscouse one installed.

 

I can vouch for syntrax, I had notchy 2nd gear and it wouldnt even engage when cold. I switched to syntrax and the difference was immediate and superb.
2nd gear is now perfect hot and cold.

 

Would recommend the Syntrax (Castrol) here

75w-90 Gear oil

Cheers
Guy