andrea_okkenQuestions(1)Answers(1)Posts(0)Commentsstuck cylinder oil rings and clogged cylinder oil drain ports because of oil and carbon build up. (2003 caddilac deville 4.6liter northstar 175k)chemtooler answered 10 years ago • Cleaning / Degreasing > Chem-Dip® Carburetor and Parts Cleaner1296 views3 answers0 votesCrop