How much Sea Foam Motor Treatment should I use in a Lexus ES350? [SOLVED] Asked by Leo W L. In Alabama Is it okay to add 2 or more ounces per gallon in my 2017 Lexus ES350?
That’s a great question Leo. Yes, you can add more than 2 ounces per gallon when treating your fuel. It’s not necessary on a regular basis, but it’s safe to add a higher concentration whenever you need to boost fuel injector or upper engine cleaning. Tip: We often recommend adding a full can when the tank is low and drive at least 20 miles before adding fuel.