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For example the heads or block? My valve cover and turbo housing and many others parts have a fair amount of oil deposits inside the passages which I can't get at with Simple Green, brake cleaner, carburetor cleaner, Gunk Engine Cleaner, or using elbow grease. What do the commercial operations use to get this done right and where can I get some?
OverZealous (CT) My General posts (click)
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