I went through a couple of diffs. Image a WWII era B-17 struggling to climb up to cruising altitude with a full bomb load. A constant whirring hum that is a function of road/whell speed. Worse when you are decelerationg.

Do a seach on my name for alot more on the diffs.

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Patrick Leber
'84 190E 2.3
'83 Porsche 944 (track car)
'84 Porsche 944 (parts car)
85.5 Porsche 944 (sled)