2 bottles of Sea Foam [SOLVED]

Hi Antonio. Adding two cans to 35 gallons of fuel is fine, but you’re only adding less than one ounce per gallon. Here’s a tip: I always add Sea Foam when the tank is low to increase the cleaning concentration. I might add 2 cans to 1/8th tank and drive 20 miles before adding more fuel.  Hope this makes sense!