Good question. Yes, soaking engine components or fuel system components (carb parts), transmission parts, and/or hydraulic system parts in a Sea Foam bath is a great way to clean parts.

Start with a slow cooker (crock pot). Either buy a new one for the kitchen (don’t use it for food again after using Sea Foam in it!), or purchase a cheap one dedicated to parts cleaning. Add enough Sea Foam Motor Treatment, High Mileage or Marine PRO to sufficiently cover the parts that need to be cleaned. Add the parts, put the cover on and turn the slow cooker on low or medium for 12-24 hours. After the “cooking time,” remove the parts and gently brush off the loosened contamination with a soft bristle brush or bottle brush to clean the remaining debris off the components. Pipe cleaners work great for small passageways. If there is still more contamination that needs to be cleaned, repeat the 12-24 hour “cooking time” and re-assess the parts. Hope that helps!

Good question. If your Mercury is running poorly, add a full can. If it’s running fine, you can add the 1.5 ounces per gallon as preventative maintenance to keep things running clean and prevent the fuel from degrading.

Thanks for the question, Christine!

Yes, you can still add Sea Foam. It will still stabilize and protect the fuel in the fuel tank. Add a minimum of 1 oz per gallon of fuel in the tank. Adding a whole can works too if you want to go the simple route. Adding more than 1 oz per gallon is fine and will do a good job cleaning up any fuel residues when you run it in the spring.

Thanks for the question, Michael. Yes, it’s okay to mix Sea Foam Motor Treatment (traditional) and Marine PRO. However, Marine PRO will do everything that Motor Treatment does, so you could just use that.

Thanks for the question, Jim! Yes, you can use Marine PRO in a car. It won’t hurt anything and will still do a good job cleaning up the entire fuel system, just like Sea Foam Motor Treatment.

One tip: I like to wait until the tank is low (1/4 -1/8 tank), add the whole 20 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.