Marine PRO in a Mercury 4 stroke 90hp outboard motor [SOLVED]

How do I use Marine PRO in a Mercury 4 stroke 90hp outboard motor?

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Jim D.
Jim D.
1 year ago

Hi Charles. I would add Marine PRO to every tank of boat fuel. Marine PRO cleans fuel passageways, lubricates, stabilizes fuel, and provides corrosion protection to upper engine areas.  At least two times a year I like to add a can or two a low tank of fuel and run the engine under load (hole shots, high RPM).

This video covers the high cleaning concentration idea:

https://www.youtube.com/watch?v=2BHras_ZrHY&t=27s