Quaife Differential gear oil

[Exhlr8n]

The Comp Coupe has a Quaife diff in it. What gear oil for it?


From Quaife's website:

For a Quaife ATB differential, running in a rear axle, we advise you use a hypoid 90 or 75W90,


Anyone running 75W-140 with or without friction modifier?

How much extra oil do we need for the diff cooler?

Thanks

[Dan Cragin]

Both those oils will work, just don't run the differential pump when the fluid is cold. Unitrax sells SYNGEAR, which I have found to be the best all around lubricant.

Just fill the differential up to the fill hole, you need no additional fluid for the cooler unless the cooler or pump has been replaced.

[Exhlr8n]

Thanks Dan.