rear differential oil - '96 T100

Started a fluid changing session on a '96 T100.

Going directly by Toyota recommended spec oils in the owners
manual - I used Mobile 1 75-90 gear oil in the front differential,
tranny and transfer case. When I get to the rear differential,
Toyota says to use 90W gear oil. Can I get by using Mobile 1
75-90 in the rear differential or is this a real no-no??

If I should not use Mobile 1 75-90, what can I use in a synthetic?
I think my local auto store carries Valvoline 80-90 synthetic....


Don

Mobil 1 75w-90 is perfectly fine for your truck....

Don Carpenter wrote:[color=blue]
> Started a fluid changing session on a '96 T100.
>
> Going directly by Toyota recommended spec oils in the owners
> manual - I used Mobile 1 75-90 gear oil in the front differential,
> tranny and transfer case. When I get to the rear differential,
> Toyota says to use 90W gear oil. Can I get by using Mobile 1
> 75-90 in the rear differential or is this a real no-no??
>
> If I should not use Mobile 1 75-90, what can I use in a synthetic?
> I think my local auto store carries Valvoline 80-90 synthetic....
>
>
> Don
>
>
>
>
>
>[/color]