Yes! Sea Foam Motor Treatment and High Mileage are safe and effective to put in your oil crankcase. It’s made with 100% safe petroleum cleaning and lubricating ingredients that can’t harm anything.
Add 1 oz of Sea Foam per quart of oil in the crankcase. We recommend adding it 100-300 miles before your next oil change.
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.
Yes! Sea Foam Motor Treatment and High Mileage are safe and effective to put in your oil crankcase. It’s made with 100% safe petroleum cleaning and lubricating ingredients that can’t harm anything.
Add 1 oz of Sea Foam per quart of oil in the crankcase. We recommend adding it 100-300 miles before your next oil change.