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Dobie Gillis · 02-04-2021, 04:45 PM

"Should I go back after driving the car some more to do another oil change in the differential in case they didn't get all the old crud out? They DID let it drain for almost 30 minutes, and nothing else was coming out."

It's prolly OK as is but if you're concerned about it you can drain it, fill it wit a solvent like diesel fuel, jack the rear wheels off the ground and run it at idle for a couple of minutes to circulate the solvent, then drain the solvent until it stops dripping and refill it with diff oil. There won't be a substantial load on the diff with the wheels off the ground.

02-04-2021, 04:45 PM	#15
Dobie Gillis Senior Member Join Date: May 2012 Location: Middle TN Posts: 1,060	Re: Leaking differential "Should I go back after driving the car some more to do another oil change in the differential in case they didn't get all the old crud out? They DID let it drain for almost 30 minutes, and nothing else was coming out." It's prolly OK as is but if you're concerned about it you can drain it, fill it wit a solvent like diesel fuel, jack the rear wheels off the ground and run it at idle for a couple of minutes to circulate the solvent, then drain the solvent until it stops dripping and refill it with diff oil. There won't be a substantial load on the diff with the wheels off the ground. __________________ Often wrong but never in doubt.