You can leave Sea Foam Motor Treatment in there for the life of the oil (until your next oil change). It won’t hurt anything to leave it in for a long period of time.
That said, we recommend adding Sea Foam to your oil about 100-300 miles before your next oil change. That gives it time to clean and allows the residues that the Sea Foam cleaned to be drained away with the old oil.
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.
You can leave Sea Foam Motor Treatment in there for the life of the oil (until your next oil change). It won’t hurt anything to leave it in for a long period of time.
That said, we recommend adding Sea Foam to your oil about 100-300 miles before your next oil change. That gives it time to clean and allows the residues that the Sea Foam cleaned to be drained away with the old oil.