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  1. #1

    Marvel Mystery Oil

    Has anyone Used it as an oil additive in thier boat? Works great on motorcycles.

  2. #2
    Join Date
    Apr 2002
    Sorry but I have somewhat of a dilema about putting something in my boat that is called "mystery oil" but I have talked to a lot of people that swear by it in their trucks.

  3. #3
    I use it all the time and it seems to work great. I have never had any problems, was turned on to it by someone who used it in their boat, swore by it and started me on it.


  4. #4
    I use it on my snowmobile, outboard engine and winterize my boat with it.

    Mix it with straight 30 wt.

    I swear by it!

  5. #5
    Registered Budman's Avatar
    My Boats:
    Hot rods, Hot boats, Beer & more Beer
    Join Date
    Oct 2000
    Kentucky - where the women are so fast we have to put a governor on 'em!!
    What kind of benefits have you seen from it? Any actual anecdotal evidence that it works as claimed?

  6. #6
    My snowmobiles have never had engine problems due to not fogging them in the fall. Just mix the oil with 30 wt., take out the plugs, pour in a cap full, pull the rope a few times and put the plugs back in. In fall start it up, let it run, then put in new plugs. Snowmobiles are notorious for burning up crank bearings if not winterized properly.

    I do the same thing to my outboard engine. The sucker starts on the second pull each spring. Its a 7.5 Evinrude 1980ish.

    I pour the mix down the carb on the Sea-Ray each fall while the engine is running.

    So, I do not see any benifits except I feel my toys are being properly maintained, and the MMO is part of it.

    I've been using it for eons! If it ain't broke, don't fix it!
    Last edited by Kirkules; 07-19-2002 at 11:39 AM.

  7. #7
    Registered Mark in So. MD's Avatar
    Join Date
    Mar 2002
    Solomons Island, MD
    I use in all of my vehicles oil. Never tried the boat engine, but will when i get another one.

    You can you burn it in your Outboards(2cycle)? Havent heard of that but I dont know.

    Also it says you can put it in your fuel, anyone ever tried that?

  8. #8
    I use it in my fuel, works great.


  9. #9
    Banned cuda's Avatar
    Join Date
    Sep 2001
    Deland, Florida
    I've used it to free three different siezed engines, two on boats, and one on a jet ski. I fill the cylinders with it and let it soak. I've used it many other ways too, and I love the smell of it.

  10. #10
    Charter Member #590 Charter Member Laveyman's Avatar
    My Boats:
    1998/2005 Eliminator 33 Daytona Twin 950 HP
    Join Date
    Dec 2000
    Corona, CA
    Okay, so lots of folks use it in differnt ways. But...Just what does it do that makes you so happy with it?

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