What is the Best Fluid to Use in my Front Diff

djay6286 · Post by **djay6286** » Thu Mar 05, 2009 5:49 am

Hi Guys,
Just wondering what is the best fluid to use Brand wise i have a 96 Impreza i want to put the best in so any tricks or anything aswell please let me know
Thanks

bobbyjimmy · Post by **bobbyjimmy** » Thu Mar 05, 2009 8:52 am

Its pretty debatable which is the best, but if you don't care about money, Motul Gear 300.

discopotato03 · Post by **discopotato03** » Thu Mar 05, 2009 8:57 am

If its manual the front diff "swims" in the same pool as the gearbox .

If you don't mind the price I think the Castrol Syntrax is the way to go personally .
I'll have to check in the cave but I use (from memory) the 75W90 and the lable on the back of the bottles mentions that it works with differentials ie Subaru gearboxes . Don't get the one that doesn't mention this because crownwheels and pinion gears are often what you call hypoid bevel tooth form and have special lubrication requirements .

It'll probably owe you $100ish to buy four 1L bottles and again from memory the boxes take ~ 3.5L .

Cheers A .

AlpineRaven · Post by **AlpineRaven** » Thu Mar 05, 2009 9:02 pm

I cannot remember what i bought last time but costed me $75 all up lasted me for a while...

Make yourself a small bottle with a large tube that just fits in the dipstick that is located on drivers side... and pour the oil down the bottle.. If you want a pic - i'll send you a pic of what it looks like..
Cheers
AP

rob83ke70 · Post by **rob83ke70** » Tue Mar 10, 2009 8:05 pm

the syntrans is a good oil. They take multitrax 75w90 stock, and this is perfectly ok but keep an eye on it and change it when it starts to look scungy.

Sometimes oils last a bit longer than their service interval, sometimes they don't last as long, all depending on the vehicle and how its driven and so on.

Robert.

Phizinza · Post by **Phizinza** » Wed Mar 11, 2009 8:28 pm

I like Fuchs RX80 for gearbox and diffs