GM 14-bolt FF Rear End with 149k miles
Hi to all, Our TV is a GMT400 1997 GMC K2500 7.4L Burb with 149k miles. It is 8-lug, 3.73, GVWR 8,600, with GAWR RR of 6,000 lbs for the full floater rear axle. We believe the rear end also has 149...
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Find another mechanic ! Miss information. Try finding a 'good' 4x4 shop and
talk to their diff person
My GMT400, 1996 Sub with a 14 bolt FF and G80 locker has had synthetic ever since
it's first flush at 500 miles. I've owned it since new.
Again, the G80 is a locker with clutches that needs no LS friction modifier additive. The difference between your's and mine is that your's has a lower RPM
centrifugal switch.
It has not leaked a drop and is now at +163K miles. VERY HARD miles. I've had
one rear off the ground many, many times to have the locker walk me out of whatever it was
talk to their diff person
My GMT400, 1996 Sub with a 14 bolt FF and G80 locker has had synthetic ever since
it's first flush at 500 miles. I've owned it since new.
Again, the G80 is a locker with clutches that needs no LS friction modifier additive. The difference between your's and mine is that your's has a lower RPM
centrifugal switch.
It has not leaked a drop and is now at +163K miles. VERY HARD miles. I've had
one rear off the ground many, many times to have the locker walk me out of whatever it was
