Rear end oil

alvarofue · #1 (**permalink**) 10-18-05, 09:30 PM

Hi
I think it is time for me to change the differential oil. I know it uses a "special" GM oil, but I find it to expensive.
Can I use some other oil?

Thanks in advance

CVP33 · #2 (**permalink**) 10-18-05, 09:40 PM

Please tell me you didn't just say rear end oil!?

alvarofue · #3 (**permalink**) 10-18-05, 10:00 PM

Sorry, I'm from chile and I don't speak englinsh perfectly, but isn't rear end and differential the same thing??
Maybe I was trying to say final drive unit oil.

CVP33 · #4 (**permalink**) 10-18-05, 10:12 PM

Rear differential. You can use Mobil One Synthetic Gear Lube. It's roughly 1/2 the price of the GM fluid. My guess is 75w-90 but best to check your owner's manual.

alvarofue · #5 (**permalink**) 10-19-05, 09:17 AM

Thanks
I've seen the owner's manual, and it says SAE 90 (excluding limited slip diferentials).
It's Ok to use multigrade instead of monograde oil?