Diff Leak

Pewtinn · 11-13-2023, 10:17 PM

While getting my oil change today, I noticed I had a diff leak (not dripping, just seeping). The bushing didn't appear to show any cracks.

1. When I decide to get it addressed, should I ask the shop to replace the culprit seals or change/upgrade the bushings as well? (Not sure if the labor is similar to each jobs). I'm thinking if the subframe has to come down anyway even for a seal replacement, I might as well change the bushings out too.

2. If the bushings/plate need to be changed, any recommendations on what upgrades I should be eye'ing (or replace with OEM)?

3. Any other upgrades/maintenance parts I should consider (while I'm there)?

4. Price ranges I should be expecting for labor costs?

2018 M3 ~45k miles, Tri-state area.

Thank you!

Jakester · 11-14-2023, 12:49 PM

I had a leaking differential repair quoted at about $1,500 at a local dealership.

Pewtinn · 11-22-2023, 09:17 PM

It seems the labor between changing bushings and changing a seal for a diff leak are different. Anybody else experience a diff leak and got it taken care of at their local mechanic? curious to see the pricing ballpark in the northeast

11-13-2023, 10:17 PM	#1
Pewtinn First Lieutenant 112 Rep 347 Posts Drives: 2018 M3 Join Date: Jan 2021 Location: New York, NY iTrader: (0)	Diff Leak While getting my oil change today, I noticed I had a diff leak (not dripping, just seeping). The bushing didn't appear to show any cracks. 1. When I decide to get it addressed, should I ask the shop to replace the culprit seals or change/upgrade the bushings as well? (Not sure if the labor is similar to each jobs). I'm thinking if the subframe has to come down anyway even for a seal replacement, I might as well change the bushings out too. 2. If the bushings/plate need to be changed, any recommendations on what upgrades I should be eye'ing (or replace with OEM)? 3. Any other upgrades/maintenance parts I should consider (while I'm there)? 4. Price ranges I should be expecting for labor costs? 2018 M3 ~45k miles, Tri-state area. Thank you!
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11-14-2023, 12:49 PM	#2
Jakester Private First Class 28 Rep 137 Posts Drives: F82 Join Date: Jan 2015 Location: York PA iTrader: (2)	I had a leaking differential repair quoted at about $1,500 at a local dealership.
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11-22-2023, 09:17 PM	#3
Pewtinn First Lieutenant 112 Rep 347 Posts Drives: 2018 M3 Join Date: Jan 2021 Location: New York, NY iTrader: (0)	It seems the labor between changing bushings and changing a seal for a diff leak are different. Anybody else experience a diff leak and got it taken care of at their local mechanic? curious to see the pricing ballpark in the northeast
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