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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wash, Wax, Detailing and Cosmetic protection/repairs > How to clean the old oil under valve cover



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      11-01-2024, 01:06 PM   #1
Gorillajin
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How to clean the old oil under valve cover

Hello
My car was leaking oil from valve cover gasket area for a while, and finally the gasket was replaced. The dealer did not clean the gunk of oil, and it's still there.
I like to clean the oil that way if there is an oil leak, I know right away.

Can I just spray oil de greaser to remove those gunk? Spray water down in the engine bay? Do I need to remove the under cover to let water escape to the floor?

Some of areas are hard to reach, and I am wondering spraying de greaser is enough to remove those oil stain and gunk.

Any advice is welcome.

Thank you.
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      11-01-2024, 04:17 PM   #2
codeterrorist
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I would imagine removing the splash trays from underneath will allow the dirty soapy water to drip down so it doesn't get collected on the trays.
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      11-02-2024, 08:43 AM   #3
tcphoto
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As suggested, remove the splash tray then clean the area with a degreaser and a nylon brush. The tray over the exhaust manifold should be bright aluminum and I remember how satisfying it was to clean after I DIY'd the VCG.
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