Using Sea Foam in fuel and oil [SOLVED]

Thanks for the question, Jean. Sea Foam works great in both fuel and oil, so you can do both or either. I’ll add that it’s always helpful to use it regularly in both fuel and oil.  For your oil, add half a can 100 to 300 miles before each oil change. In your Lancer’s fuel, add a can to a low tank every 2 or 3 months. Hope this helps!