Sea Foam Marine PRO is safe and effective in your Mercruiser. Marine PRO works through the fuel system to clean fuel residues and varnish that often cause common marine engine problems (rough idle, loss of power, hard starts). Adding Marine PRO to your fuel is an easy way to overcome or prevent these problems.
I’d start by doing this:
Wait until you have a low tank of fuel (2-4 gallons). Add a full can of Marine PRO to the fuel. Run your boat at least 20 minutes if you can (just don’t run out of gas!), and don’t be afraid to run it hard. Then, refill your fuel tank as normal.
After that, you can add Marine PRO to every tank of fuel as preventative maintenance. Add 1 ounce of Marine PRO per gallon of fuel.
We use necessary cookies to make our site work. We'd also like to set analytics cookies that help us make improvements by measuring how you use the site. These will be set only if you accept.
Based on your browser's "Do Not Track" or "Global Privacy Control" settings we have automatically rejected analytics cookies for you.
Necessary Cookies
Necessary cookies enable core functionality. The website cannot function properly without these cookies, and can only be disabled by changing your browser preferences.
Analytics Cookies
We use Google Analytics cookies to help us improve our website by collecting and reporting information on how you use it. The cookies collect information in a way that does not directly identify anyone.
Sea Foam Marine PRO is safe and effective in your Mercruiser. Marine PRO works through the fuel system to clean fuel residues and varnish that often cause common marine engine problems (rough idle, loss of power, hard starts). Adding Marine PRO to your fuel is an easy way to overcome or prevent these problems.
I’d start by doing this:
Wait until you have a low tank of fuel (2-4 gallons). Add a full can of Marine PRO to the fuel. Run your boat at least 20 minutes if you can (just don’t run out of gas!), and don’t be afraid to run it hard. Then, refill your fuel tank as normal.
After that, you can add Marine PRO to every tank of fuel as preventative maintenance. Add 1 ounce of Marine PRO per gallon of fuel.