8ight conversion

Nice conversion! With a 1512 2.5d I'd go with 50k or lighter. I found 100k to be the magic number with my 1515 1y. anything lighter and it unloaded too hard, anything heavier and it was a wheely machine. The 1512 makes less torque so lighter oil in the 30-50k range should suit you well.

Originally Posted by DickyT

Nice conversion! With a 1512 2.5d I'd go with 50k or lighter. I found 100k to be the magic number with my 1515 1y. anything lighter and it unloaded too hard, anything heavier and it was a wheely machine. The 1512 makes less torque so lighter oil in the 30-50k range should suit you well.

Thanks Dicky but please give me your suggestion for front, center and rear diff oil's....i'm new