I see everything in the owner's manul for fluid change intervals, except the differential. What is the recommended fluid change interval?

Thx in advance!

I see everything in the owner's manul for fluid change intervals, except the differential. What is the recommended fluid change interval?

Thx in advance!

I dont take in consideration the user manual... I change all the fluid at 10000-15000 km. I think this is the best solution if you use on offroad... I (hummer italy) have make also an upgrade on transfer case (in Italian is radiatore) and some sticker that change colour.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by tomp:
I see everything in the owner's manul for fluid change intervals, except the differential. What is the recommended fluid change interval?

Thx in advance! </div></BLOCKQUOTE>Which one?

The diffs...

It's the same as the transfer case.

I believe it is part of the 30K service, depending on your usage. More severe, more often.

Phil:

Are you using Royal Purple in the transmission, transfer case, and differential? Also, can you tell us exactly what Royal Purple is (who makes it & what weight you use)?

Thanks,

George