Thanks for the question, Durand!

Here’s an excerpt from a page on our site about what to do with a snowblower that isn’t starting right. You’ll want to drain most all of the gas (which you can still use since it’s fresh) in the tank so you can create a high concentration of Sea Foam, and follow the directions below:

“If the snow blower isn’t starting due to a gummed up carburetor or other gum/varnish issues in the fuel system, Sea Foam will help clean it up and get it running again. Here are step by step instructions for how to use Sea Foam:

• Remove the old fuel from the tank, then drain the fuel from the carburetor (usually a screw)
• Add a cleaning dosage of Sea Foam to an empty tank followed by a small amount of fresh fuel (a 1:2 ratio of Sea Foam to fuel is a good cleaning dose. Add 4 oz of Sea Foam and 8 oz of fuel).
• With Sea Foam mixed in the tank fuel, rope pull/crank or press your primer bulb 3 or 4 times to draw the fresh fuel and Sea Foam into the carburetor
• Then let the engine sit overnight to allow the Sea Foam to dissolve any fuel residues from the carburetor (older or excessive gum/varnish may need to soak two to three days).
• Once the engine starts, the Sea Foam in the fuel will continue to clean and help restore lost engine performance.”

Here’s a link to the full page: https://seafoamworks.com/fix-a-hard-starting-snow-blower/

Thanks for the question Tony! You can add Sea Foam as often as you’d like. It won’t hurt anything.

However, if you are driving a vehicle regularly, you don’t need to add it to every tank of fuel. A high concentration (two 16 oz cans in a low tank) every 3,000 miles or every 2-3 months is plenty to keep your engine running clean.

If it doesn’t get driven regularly, then adding a can to every tank will prevent gum and varnish from forming while it sits.

Note that in small engines you’ll want to add Sea Foam to every tnak since they often don’t get run every day.

Hope that helps and let me know if there’s anything else!

Thanks for the question! Sea Foam in the gas tank works to clean up fuel residues or deposits that formed in the fuel system while the truck sat. That’s often the cause of performance problems like rough running in this case. Sea Foam (or any other fuel additive) won’t restore old gas or remove large amounts of water from the tank. But if a dirty fuel system is the cause of the problem, Sea Foam will help. If not, you’re one step closer to diagnosing what’s happening, and a cleaner fuel system can only help.

Here’s what I’d do: if the truck still runs, drive it until the fuel tank is low (1/8 to 1/4 tank). Then, add a full 16 oz can of Sea Foam High Mileage. Drive it until almost empty before refueling with fresh gas. The high concentration of Sea Foam in the gas tank will work well to clean things up. You can repeat that process (adding a full can to a low tank and driving it) another time if you’d like.

Keep me posted on how it goes if you try it! And feel free to let me know if you have any other questions.

Thanks for the question, Henry! Yes, Sea Foam is good at cleaning up varnish in a fuel tank and fuel system.

If the fuel is two years old, your vehicle should start and run fine. Here’s what I’d do: add a gallon of fresh fuel to the tank. Then, add an entire can of Sea Foam Motor Treatment. Drive the vehicle until almost empty before refueling. The high concentration of Sea Foam will clean up varnish in the fuel tank and fuel system.

If you’d like, you can repeat the process to make sure everything is as clean as possible. Just wait until you have a low tank of fuel, add a full can of Sea Foam, and drive it until almost empty before refueling.

Thanks for the question, Bruce. For routine/preventative maintenance, add at least 1 ounce of Sea Foam per gallon in the tank.

Here’s what I’d recommend: add a high cleaning dose of Sea Foam to a low tank of gas. That will clean up fuel residues and deposits and help overcome any problems they’re causing. 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. It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits.