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2015+ S550 Mustangs
Drivetrain Modification/Discussion
Differential chatter after switch to AMSOIL
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<blockquote data-quote="gqneon" data-source="post: 14889998" data-attributes="member: 172453"><p>I switched to AMSOIL 75W-90 severe gear and tried it without and then with 4 ounces of Ford friction modifier, pretty much the same results, maybe a little quieter. I never tried this test before I swapped fluids so maybe it makes noise on the PP cars from the factory and I never knew it? Can anyone try it and confirm? The only other possibility is that I somehow damaged the ring and pinion set without it making any noise or any other symptoms?</p><p></p><p>It also seems to be mostly present at very low speed, mostly audible below 5-10 mph. Again, doesn't seem like that would be normal and hard to believe it would be from gear lube with the same base number without being driven other than slowly in a parking lot right next to my house. </p><p></p><p>Also, drain plug before and after every stage had no metal, but when I initially pulled it out it was gunked up some with dark grease that I wiped off the plug before reinstalling. Maybe there was a problem with the rear end and this is just how I discovered it?</p></blockquote><p></p>
[QUOTE="gqneon, post: 14889998, member: 172453"] I switched to AMSOIL 75W-90 severe gear and tried it without and then with 4 ounces of Ford friction modifier, pretty much the same results, maybe a little quieter. I never tried this test before I swapped fluids so maybe it makes noise on the PP cars from the factory and I never knew it? Can anyone try it and confirm? The only other possibility is that I somehow damaged the ring and pinion set without it making any noise or any other symptoms? It also seems to be mostly present at very low speed, mostly audible below 5-10 mph. Again, doesn't seem like that would be normal and hard to believe it would be from gear lube with the same base number without being driven other than slowly in a parking lot right next to my house. Also, drain plug before and after every stage had no metal, but when I initially pulled it out it was gunked up some with dark grease that I wiped off the plug before reinstalling. Maybe there was a problem with the rear end and this is just how I discovered it? [/QUOTE]
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Drivetrain Modification/Discussion
Differential chatter after switch to AMSOIL
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