Walmart offers the Sea Foam 16 fl. oz. Marine & Motor Treatment for $6.97. Opt for in-store pickup to avoid the $5.99 shipping fee. That's the lowest price we could find by $3. Buy Now Tips Amazon matches Features cleans fuel injector and carburetor passageways cleans intake valve and chamber deposits lubricates upper cylinders works in crankcase oil
There are lots of things Uncle Sam can't touch — so long as you play by the rules.