Quote:
Originally Posted by -ZS-Carpenter
Morning degenerates  Got 28° now with a high of 60° and sunny this afternoon.
Halloween party this evening and 125k mile maintenance on the G this morning. All the fluids other than the coolant and PS are getting changed.
Why do the diffs take different fluid that is near identical? 75w-90 gl5 rear 80w-90 gl5 front 
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GL-5, you can use either.....as most 75w/90 is synthetic