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I am working on removing valve cover gasket. I removed outer gasket but spark plug gaskets are very brittle. Is it safe to use brake cleaner? Some of chemical will get mixed with oil so I want to make sure.
 

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// Quandt AG (Retired) //
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I am working on removing valve cover gasket. I removed outer gasket but spark plug gaskets are very brittle. Is it safe to use brake cleaner? Some of chemical will get mixed with oil so I want to make sure.
I use brake cleaner to clean off the remnants of the VCG off the head but I spray it onto the rag I'm using not directly onto the surface.

For the plastic valve cover I use less harsh carb cleaner, again onto the rag then wipe off the surface of the cover.
 
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