Seafoam usage Help!

How often can you use Seafoam safely in your gas tank? I used it once about two or three weeks ago and was thinking of using another can because I am still having problems. Any thoughts?

What makes you think that you have a fuel related problem? What size engine do you have? What is it doing or not doing?

seafoam is just like any other cleaner when used in the fuel system, so you can use it as often as you like. If you are trying to get rid of the knock when you start the truck you are wasting your time and money. From the articals i have read, seafoam and lucus seem to be the best on the market for cleaners and lubes. they are just a little pricey.