How much Marine Pro should I use to Clean a 2-Stroke Johnson outboard [SOLVED]

I have a 200 hp 2-stroke Johnson outboard. The oil is separate and is directly injected. I would like to use your product to clean my motor. I have about 12.5 gallons of 89 octane gas in the tank currently. This gas may contain up to 10% ethanol according to the pump. How much of your product should I use for a cleaning?

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Jim D.
Jim D.
3 years ago

Thanks for the question Keith.  We recommend at least 2 ounces of Marine PRO per gallon of fuel when cleaning fuel passageways (carburetor circuits or fuel injectors).  Keep in mind that the more Marine PRO you add to less fuel (higher concentration), the better and faster it cleans!  Consider running the fuel down as low as you wish before adding the treatment.