OEM sealant for oil pan

3fordasho

Well-known member
Joined
Jun 15, 2012
Location
Southern MN
TDI
15 Passat 6M
2015 Passat 6mt (35K miles) has developed a leak at the oil pan flange (verified to not be leaking from higher up like cam / crank seal or valve cover. Looks to be a straight forward job but wondering what the recommended sealant is for this job? Learned from the 7.3 powerstroke forum that the sealant type is critical for pan sealing on those and they even recommend removing the engine and inverting for proper sealant and oil pan installation! Hopefully that is not necessary here. Oil leak is small but over time soaks the plastic foam filled pan "skid plate" and eventually even drips from the lower cover.
 

3fordasho

Well-known member
Joined
Jun 15, 2012
Location
Southern MN
TDI
15 Passat 6M

I would be surprised if that is actually your leak, though. Usually the machine fit surfaces that use that type of sealant do not leak. Have you removed the oil pan plastic cover and inspected it after running? The drain plug or oil level sensor would be more likely to leak.
Yes I've removed the plastic cover, cleaned the perimeter of the pan flange with brake cleaner, driven a few miles and then put up on lift. A few fresh drops showed up on the flange on the rear left side. It is the flange seal. The drain plug is new with every oil change and it's not the oil level sensor.

And thanks for the link. Looks like a project for this weekend ;-)
 
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