5kcst's autobox final drive oil question...

[Albert Ng <alng@expert.cc.purdue.edu>]

Hi guys,


I am about to change the final drive oil for my 5kcst (3 speed auto).
I bought some synthetic Mobil1 GL-5 75/90w gear oil the other day at
AutoZone.

However, after I checked the owner's manual and Haynes, it says:
Final Drive oil --- GL-5 80w  0.7 qt


Gees, I wonder if I can use the Mobil1 without the risk of frying the
final drive and the tranmission? Do you guys think Mobil1 compatiables
with the factory oil? They both are synthetic oil anyway, right?

 


TIA


Albert Ng
'87 5kcst