seafoam?

I put a little in my crankcase today. How long should I keep it in before I drain the oil?

not very long, i wouldn't run it for more than 500 miles.

seafoam????????

Im not 100% on this but I think it says dont drive the truck with it in there

it is a solvent based cleaner. some say leave it in the course of your oil change - others say add it 500 miles before you change your oil.