The best way to treat the fuel and oil in a Harley Davidson [SOLVED]

Hi, is Sea Foam okay to use in my v-twin Harley Davidson’s motor? If so, how should I split up the ounces if I want to treat both the fuel tank and oil with the same 16 ounce can?

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Jim D.
Jim D.
3 years ago

Thanks for the question Mark. Yes, it’s very okay to use Sea Foam in your Harley’s fuel and motor oil. For dividing the 16 ounces I would add 1 ounce per quart of oil to the crankcase, then pour the rest of the can into a partial or low tank and ride as normal. After that, add to oil every interval… and one or two ounces of Sea Foam per gallon of fuel every few fill-ups will help keep things straight.

Mike T
Mike T
1 year ago

All these answers are non-specific as to which type of Sea Foam is being used. Can you please mention which type you’re speaking about (i.e. motor treatment, top engine, high mileage, etc…)?

Conner Kranz
Conner Kranz
1 year ago
Reply to  Mike T

Thanks for the clarification prompt, Mike – good question!

In this case, Sea Foam Motor Treatment is the product referred to.

A few quick notes on the other products and what they can be used in:
– Sea Foam Motor Treatment works great in any gas or diesel engine.
– High Mileage and Sea Foam Spray (top engine treatment) are for gasoline engines only.

High Mileage would also be a great choice in this case!