Whats the best oil to use for the diff?

 

Mobil SHC 75w90

 

I personally prefer the Motul Gear 300 75w90
100% synthetic, Competition-high performance.
But I am biased as I use the 300v competition oil too!!
and the RBF for my brake fluid.

 

i use tully synthetic mobil taf-X 75W90,

 

I prefer FULLY

 

Mind I was thinking of trying tully synthetic, so is it any good?

 

 

Fully synthetic is the only way to go.

Millers oils m8.

The Best.



Stephen

 

can you use the same diff oil for the front diff..and the rear diff as well?and what about the center diff....maybe stupid question but...heh

 

front and rears use the same,

the gearbox has its own specific MT75 oil

the transfer (inc the centre diff) uses Dexron 3 oil,

**BUT**

using the dexron 3 and mt oil in the box and transfer does make it nopisey when its hot and it ralltes like a bag of bolts,

some tuners have found a mobil oilt hat they use (the same in both) that stops this, and keeps the gears changing nice,

IIRC, Stu has some used it as has Gaz@CPP in cheshire (when he was cossie powered before he wnt all evo on me )

 

Me too