Stop in for a cup of coffee

dukeboy_318 said

Hmm I have two of those, both about half full of heavy duty shell brand water proof and high temp grease. Been thinking about combining the two into one and cleaning the other out for the shop can but shop and degreaser don't work on this stuff

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Grease is harder to clean out. First remove as much as possible manually (shop towels, etc.) Then use hot water or steam to liquefy and float the grease to the top of a water layer, let it cool and scoop it off. Then use liquid Tide laundry detergent in large amounts with very hot water to scrub the rest out.

Believe it or not, they use the equivalent of liquid Tide and steam to extract the last bits of crude from spent oil wells.