I saw a post using a Scotchbrite to clean with. They EAT Engines. All OE have Service Bulletins about their use! https://static.nhtsa.gov/odi/tsbs/20...37601-9999.pdf
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize.
1977 Trans Am W72 400, TH350, 3.23 T Top
Everyone you will ever meet knows something you don't.
Bill Nye.
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