E-Class (W212) 2010 - 2016: E 350, E 550

Are motor (engine) mounts oil filled?

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Old 04-13-2021, 10:55 AM
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W212 E250
Are motor (engine) mounts oil filled?

I'm tracking down an oil leak in the area of the left outer cv joint but see oil on the under-side of the motor mount. I don't know if it's the cv joint slinging oil/grease onto the mount or if the motor mount has oil in it...looks more like a thick oil than grease.

Thanks.
Old 04-13-2021, 11:05 AM
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2014 E550-sold 😩
Yes, the mounts are hydraulic.
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Old 04-13-2021, 11:38 AM
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1922 Ford Model T / no OBD
I could never confirm that and I took few of them apart.
Even when you have fluid in MM, there is only an ounce, or 2 of it, Not enough to show as a running leak.
Old 04-13-2021, 12:17 PM
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'11 E350, '11 E550, '98 M3, '95 E320
W212 motor mounts have fluid in them, I've taken them apart: https://mbworld.org/forums/e-class-w...ml#post8249897

Not a lot, a few ounces, and the fluid is very thin. I'd would inspect the CV boot closely for tears.
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