Quote:
Originally Posted by GregWeld
The answer to that is yes.
Did you add a friction modifier to your rear end grease?
Most all aftermarket gears whine... Some worse than others. DO NOT run synthetic gear lube. According to the Detroit rep - it's TOO SLICK.
The GM 12 bolt splits the carrier at some point. Don't remember what that is but the gears have different thicknesses. But that's a GM issue not a FORD issue.
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Thanks. I'm not using synthetic lube in the rear, nor have I added a friction modifier, but all the non-synthetics I can get locally have an LSD additive.