Adding Sea Foam to 4-stroke outboard oil [SOLVED]

After I add 1 oz of Sea Foam to my 2017 60 hp Honda outboard motor oil, how long should I run the motor on the lake or on land before changing the oil?
Thank you.

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Jim D.
Jim D.
2 years ago

Hi Stephen. First, you’re going to want to add at least 1 ounce per quart of oil in your outboard’s crankcase. I would think that the engine capacity is around 3 to 4 quarts of oil. As far as running time, figure a minimum of one engine hour of running to allow the Sea Foam enough time to circulate and clean. You could also use Marine PRO. Hope this helps!