Sterling Diff Oil

97supersteal · #1 (**permalink**) 01-07-2008, 05:00 PM

I have a 1997 F-250 with the Sterling rear diff. What oil weight should I use. I've searched the forums, however most are for 1999 and newer. Thanks for any help.

sgt dave · #2 (**permalink**) 01-07-2008, 06:41 PM

i just added a pml rear diff cover to mine and i went with amsoil 75-90w full synthetic oil. everything seems to be working great so far.

720Deere · #3 (**permalink**) 01-07-2008, 06:42 PM

It should be the same. I think all the Sterlings take 75W140 synthetic.

**CHUCK** · #4 (**permalink**) 01-07-2008, 07:55 PM

75W140 synthetic

4rcFed · #5 (**permalink**) 01-07-2008, 07:55 PM

There seems to be alot of different opinions out there, as I recently had the same question.

My FORD manula calls for 75W-140. So I am ordering some Royal Purple, in that weight.

I "heard" there was a TSB to change it, but I can't find it, and I never saw it posted.

**Maintain** · #6 (**permalink**) 01-07-2008, 07:58 PM

75 W 140 here too.

Synthetic! I bought mobil one w/ lsd additive already in it!

sydeshowbob · #7 (**permalink**) 01-07-2008, 08:18 PM

75 / 140 here to - mobile 1 with the additive

97supersteal · #8 (**permalink**) 01-07-2008, 10:19 PM

Thanks for all the replies. 75 / 140 it is. Thanks again. You guys are on top of it.....

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