How much Sea Foam should I add to my fuel tank? One of my friends keeps talking about using Sea Foam regularly to keep his vehicles running clean, so I finally got a can to put in my Toyota 4-Runner.
How much Sea Foam should I add to my fuel tank? One of my friends keeps talking about using Sea Foam regularly to keep his vehicles running clean, so I finally got a can to put in my Toyota 4-Runner.
Hi Riley, great question! For maintenance – meaning maintaining a healthy engine or stabilizing stored fuel – we recommend 1 oz per gallon poured into your tank for all fuel types. One can treats up to 16 gallons. One gallon of Sea Foam treats up to 128 gallons.
For cleaning a gasoline or diesel fuel system, it’s safe to add more Sea Foam to fuel. In fact, the more Sea Foam you add to fuel, the better it cleans – and there are NO harsh chemicals! Start with 2 oz per gallon, and increase that as needed.
Ratios for induction cleaning devices can be as high as 50% Sea Foam to fuel. For overcoming driveability problems caused by residues and deposits (hard starts, stalls, hesitation, loss of power), add a full can of Sea Foam to a partial tank of fuel. Adding it to a partial tank maximizes cleaning concentration.