Thanks for the question, Heath. The 5 oz and 20 oz are two different formulas. 

The 5 oz bottle (IC5 Fuel Injector Cleaner) is specifically formulated to clean fuel injectors only. It’s for gas engines only.

The 20 oz can (Sea Foam Truck & SUV or Pro Size) does a lot more: it cleans and lubricates the entire fuel system (including fuel injectors, chamber areas, and fuel passageways), stabilizes fuel, and can be used in oil. It can also be used in diesel fuel and oil.

Hope that helps!

Hi Amy,

Before adding Sea Foam, I’d recommend having someone read the code to help figure out what the problem is. Most auto parts stores will read the code for free. Just ask at the counter for some help with a check engine light. From there, you can figure out if Sea Foam might help the problem.

For adding Sea Foam to the gas tank, here’s what I’d recommend to anyone: wait until you have a low tank of fuel (1/8 to 1/4 tank). Add a full 16 oz can of Sea Foam Motor Treatment or High Mileage, and then drive it until almost empty before refueling. That way you run a high concentration of Sea Foam through the fuel system and engine, which does a great job of cleaning.

Hope that helps!

Good question, Robert. Here’s what I’d recommend:

Simply add Sea Foam Motor Treatment to the fuel, and run it for about 15 minutes. That will draw the treated fuel through all parts of the fuel system so it’s protected during storage. A high concentration (4-6 oz of Sea Foam per gallon) will do a great job cleaning the fuel system when you’re running it, as well as stabilize the fuel for storage.

It’s up to you whether you store it with a full or partial tank.

Here’s a link with detailed instructions on storage if you’d like more info:

https://seafoamworks.com/uploads/public/resource-library/2022/07/HOW2_Small-Engine-Storage.pdf

Hope that helps!

Hey Dan – this is a great question! You are on the right track with your idea to add a full can to a low tank of fuel.

It is okay to add a whole 16oz can of Sea Foam to 2-4 gallons of gas and drive it until almost empty. In fact, that will create a high concentration that will do a great job cleaning. If the stuttering is caused by anything dirty in the fuel system, the Sea Foam will help clear it up. It’s safe to add that amount. You do not have to add any more gas.

High Mileage would be a great choice as well.

Hope that helps!

Yes! Sea Foam Motor Treatment would be safe and effective in your Fords. It’s made with 100% safe cleaning and lubricating petroleum ingredients. In fuel, it will work great in both vehicles to clean the entire fuel system.