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2012 C300 oil leak at oil filter housing and cooler

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Old Nov 23, 2023 | 09:37 AM
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From: Rivers, Manitoba, Canada
2009 Mercedes C63 AMG, 2013 Mercedes C350 4Matic Coupe. 2012 GLK 350 4Matic
2012 C300 oil leak at oil filter housing and cooler

Has anyone done the repair on this V6 engine. Saw a repair on a V 8, is it the same process? Thanks
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Old Nov 23, 2023 | 09:46 AM
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From: MA Coast
W204 2010 C300 4matic Sport M272
I recently did it, replaced the oil filter housing gasket and the oil cooler gasket. It was fairly easy to do. It worked out well since my car just hit 150,000 miles so was due for a coolant change also.

Here's my post on it. Starts around post #20. Has the parts I bought where I bought them, torque specs for everything removed/reinstalled, how I did it etc.

https://mbworld.org/forums/c-class-w...ks-yes-no.html

I wrote some info I felt was useful in saving time like buying a 1/4 E10 socket to remove the thermostat housing easily instead of having to remove the secondary air pump prior. I didn't drain the radiator, I just removed the oil filter housing and the coolant rushed out. It was messy but easier. Just be sure to put plastic bags over the engine pulleys to keep them clean. Drain and change the oil after that.

Other things like how the Oil filter housing bolts have to be installed and torqued in a specific pattern below.




I didn't even disconnect the coolant hose, just moved it out of the way. I'm very surprised at the amount of coolant that came out of the engine doing it the way i did it, i ended up filling it with over 7 liters so im thinking most of the coolant came out. I was debating if I should get one of those vacuum tools to fill the coolant but turns out it wasn't needed, just keep filling the coolant reservoir and seemed to purge itself.




And cannot forget where I got the parts which was from eEuroparts. All oem manufacturers parts for a very good price. I listed all the part #s in my post. And if you never bought from eEuroparts before they will give you $10 credit to use just for signing up for there Loyalty program which gives you points for every purchase to use for later discounts. If you use the link below you get another 100 points.

https://eeuroparts.com?wlpr_ref=eEuro_atc0xpy6j


Last edited by TimC300; Nov 23, 2023 at 07:14 PM.
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