Will 16 oz of Sea Foam in my car damage anything? [SOLVED]

Thanks for the question, Robert. Did you put it in the gas tank, or oil crankcase?

In the gas tank, a full 16 oz can is just fine and in fact will work very well to clean the entire fuel system. A high concentration of Sea Foam in gas will work better and faster than a low concentration. I like to add a full 16 oz can to 1/8 tank of gas and run it until almost empty before refueling. Sea Foam Motor Treatment is made with 100% safe petroleum ingredients that can’t harm engine parts or components.

In the oil, do not exceed 1 oz of Sea Foam per quart of oil. If you added 16 oz of Sea Foam to a 5 quart oil system, you’ll want to change the oil.