HOW TO USE SEA FOAM MOTOR TREATMENT IN FUEL
BENEFITS
applicationS
treatment recommendations
SUMMARY
Pour Sea Foam in your fuel tank to clean and lubricate your entire fuel system. It works through fuel injectors and carburetors to remove harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas.
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!
Made from petroleum ingredients, Sea Foam is safe and effective when used in all types of gasoline or diesel fuels and fuel blends. Sea Foam does NOT contain harsh detergent or abrasive chemicals that can harm your engine or fuel system components.

HOW TO USE a high concentration of SEA FOAM
mOTOR TREATMENT IN FUEL
RELATED QUESTIONS
Can I use Seafoam Motor Treatment to stabilize fuel over the winter in a 2025 Hyundai Palisade?
Thanks for the question. Yes, you can use Sea Foam Motor Treatment for storing your Palisade over the winter. It’ll prevent fuel from degrading, preserve ignition vapors, and prevent fuel gum and varnish from forming while it sits. I’d add a can or two of Sea Foam to the fuel tank and be sure to drive it (25-50 miles) at some point before you store it so the treated fuel gets drawn through the system.
Can I add Sea Foam to 2 stroke gas?
Can I use Sea Foam in the fuel tank on a 2003 7.3 Powerstroke?
Thanks for the question, Frank. You can use Sea Foam in your 2003 7.3 Power Stroke, or any diesel for that matter. I like to wait until the tank is low (1/4 -1/8 tank), add the whole 16 oz can, and then drive for at least 10-20 miles before refueling. (The idea is to drive and use as much of the treated fuel as you can/as you’re comfortable with before refueling). It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits.
I only use a tank of fuel every 2-3 months in my 1980 Porsche 928. Is it ok to add Sea Foam at every fill up?
Same question for my boat with 1997 Crusader 454 inboards, I always add 1 oz for each gallon of fuel when I fill up.
Hi George,
Thanks for the question! Yes, it is okay to add Sea Foam to every fill up of your Porsche’s gas tank. It will work to prevent fuel gum and varnish from forming while the vehicle sits, as well as keep your entire fuel system clean. It’s an easy way to prevent gum and varnish from forming while it’s not being used. There’s no downside to using it in every tank.
You can also add Sea Foam to every fill up for your Crusader. That’s a good plan and what Sea Foam recommends since boats often sit for longer periods of time, and the Sea Foam ensures that the fuel doesn’t degrade and gum and varnish don’t form while it sits. I’d also consider using Marine PRO, the marine version of Sea Foam. Either one will work, but Marine PRO comes in a larger 20 oz can and is a good cleaner.
Hope that helps and let me know if there’s anything else!
Best,
Conner
Sea Foam
Can I use Sea Foam in my Dana Lowrider gas tank?
Thanks for the question! Yes, you can use Sea Foam in the gas tank of your Dana Lowrider. Just follow the directions on the can. It’ll work to clean fuel residues and deposits.
Here’s a little more info on how to use it:
I like to wait until the tank is low (1-2 gallons), add the whole 16 oz can, and then drive for at least 10-20 minutes (until almost empty) before refueling. It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits. Just don’t run out of fuel.

Jim D.TECH
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