These are the best scrapers in the world. If they charge you for how good they are, you have to fund them. Most German engines have silicon sealant instead of gaskets and it takes several hours to clean it with a blade or regular scraper, but it takes several minutes to clean the entire surface. Matco sells them on a truck (which I also have). I bought them for the house as they don't get much use but they are identical to the make of tool trolley.
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