B-12 as a starting fluid? October 23, 2012 Solutions Central › B-12 as a starting fluid? 0 Vote Up Vote Down BPfan Staff asked 12 years ago A friend of mine told me I can use B-12 Chemtool as a starting fluid. Is that right? What about with diesels? 1 Answers 0 Vote Up Vote Down chemtooler Staff answered 12 years ago B-12 (#0117, #0113) is an excellent starting fluid for gasoline engines. CAUTION: IT SHOULD NOT BE USED TO START DIESEL ENGINES. Please login or Register to submit your answer Username or Email Address Password Remember Me