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post #1 of 28 Old 04-22-2019, 05:36 PM Thread Starter
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Marvel Mystery Oil: Great Stuff

My chainsaws sat most of the winter and did nothing. Like me. Anyway, I poured out the old gas and put in fresh Ethanol-free fuel, along with some Marvel Mystery Oil. Holy cow, after about a minute or two, the saw was screaming like a crazed woman. Get some and see for yourself how this makes your work a whole lot easier.

"I've always been crazy but it's kept me from going insane." -Waylon Jennings
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post #2 of 28 Old 04-22-2019, 05:39 PM
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Re: Marvel Mystery Oil: Great Stuff

My dad was an airplane mechanic in WW2. Swore by this stuff. He thought Marvel Mystery Oil was the greatest stuff ever. I have used it a lot.

Sometimes It's better to keep your mouth shut, and have the world think you a fool, than to speak, and remove all doubt.
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post #3 of 28 Old 04-22-2019, 06:24 PM
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Thumbs up Re: Marvel Mystery Oil: Great Stuff

I use it quite often--good stuff for a lot of applications....

Like never=seize--if not sure--a little goes a long way. I have several partial large bottles that I bought in a lot sale during an estate final.
Enuff to last my life time.....

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post #4 of 28 Old 04-22-2019, 07:42 PM
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Re: Marvel Mystery Oil: Great Stuff

I've got a couple older Stihl chainsaws, a 029 Super and a 038 Super. I use JP Racing 50:1 and wasn't sure if that was OK for older saws. Stihl states that if you use their oil, you can run 50:1, if you run another brand run, 25:1. I feel JP Racing is as good as Stihl mix and suspect gas, IMO.

My original thoughts were to add Marvel Mystery Oil to the JP Racing 50:1 premix if I needed to be at 32:1 or so.

I did see that do not recommend using outboard oil or oil used for water cooled engines, I suspect two stroke motocross engines.

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post #5 of 28 Old 04-22-2019, 08:57 PM
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Re: Marvel Mystery Oil: Great Stuff

For decades upon decades mechanics have sworn by MM and still do. It's a great top end lube for all 4 stroke engines, I've added it to the gas in mowers & vehicles for over 40 years. Yeah, good stuff for sure.
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post #6 of 28 Old 04-22-2019, 09:09 PM
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Re: Marvel Mystery Oil: Great Stuff

Here's the SDS for it from their website:

http://www.marvelmysteryoil.com/medi...4-0818-sds.pdf

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post #7 of 28 Old 04-22-2019, 11:17 PM Thread Starter
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Re: Marvel Mystery Oil: Great Stuff

Quote:
Originally Posted by BoWoggie View Post
My dad was an airplane mechanic in WW2. Swore by this stuff. He thought Marvel Mystery Oil was the greatest stuff ever. I have used it a lot.
Interesting how the older generation seemed to know about MMO. I had an "old guy" relative who lived in the sub-zero degree mountains in northern Vermont, and he used to run MMO in everything, and it would start regardless of the temperature.


Just hoping the EPA doesn't decide it works too well and decide to ban it.

"I've always been crazy but it's kept me from going insane." -Waylon Jennings
And even worse, I don't care.
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post #8 of 28 Old 04-23-2019, 01:26 PM
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Re: Marvel Mystery Oil: Great Stuff

The history on MMO says it worked better than expected from what I gather.

Our History | Mystery Oil Motors

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post #9 of 28 Old 04-23-2019, 05:42 PM
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Re: Marvel Mystery Oil: Great Stuff

I use both MMO & Seafoam in all my stored gas, have for years with no winter storage problems.

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post #10 of 28 Old 04-24-2019, 08:31 AM
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Re: Marvel Mystery Oil: Great Stuff

Quote:
Originally Posted by spokes100 View Post
Here's the SDS for it from their website:

http://www.marvelmysteryoil.com/medi...4-0818-sds.pdf
OK...

It's flammable, and you really don't want to inhale or drink it, and definitely don't want it in your eyes. Also has benzene (which is known to cause reproductive problems).

Doesn't sound any worse than gasoline.

Mike



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post #11 of 28 Old 04-24-2019, 09:29 AM
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Re: Marvel Mystery Oil: Great Stuff

MMO added to oil really seems to aid in lubrication. Added to gas doesn't hurt, either, except for a funky odor. My best use is a couple squirts in the air tools. I was a little lax last year and my Chicago/Pneumatic Impact got sluggish......a couple squirts and back in business!

In the past:
Craftsman, MTD, Snapper, 1961 Ford 801 Powermaster, 1992 LB 4.5HP 580546, 2003 LB 10552 6.5HP Duraforce, IH Cub Cadet 105, 2001 Cub Cadet 2146 14HP Linamar 38" deck, love of my life (Sold 10 Dec 2011), 2007 Cub Cadet 2550 22HP Kohler Vtwin 50"deck (Sold 22 Aug 2018)
In use:
1994 JD LX178 sweet little mower, only 15HP, twin cyl, 38" deck, liquid cooled!
1998 JD 445 22HP Shaft driven wheels, shaft driven 60" deck, diff-lock, hydraulic lift, power steering, fuel & temp gauges, fuel injected, and liquid cooled! This machine has it all!
2005 Nortrak NT 254 25HP Diesel 5' FEL, here's a case of cost-cutting, I only need a tractor 3 or 4 times a year

Going to try to stay Liquid Cooled the rest of my life! Hey, it gets HOT here!
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post #12 of 28 Old 04-24-2019, 10:39 AM
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Re: Marvel Mystery Oil: Great Stuff

I put some in my diesel fuel at every fillup, also my lawn mower gas.
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post #13 of 28 Old 05-05-2019, 11:21 PM
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Re: Marvel Mystery Oil: Great Stuff

I switched the front snow blade to my 60" mower deck on my John Deere 455, Yanmar Diesel, greased up deck spindles, set out to mow.

Made a few passes, 455 started bogging down, I figured moisture had got in the tank and separated from the diesel.

I poured in a little MMO, let it set for awhile, tried it after a couple hours, ran like a top.

I figured I would have to drain the tank and fuel filter but that stuff is amazing.

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post #14 of 28 Old 05-06-2019, 10:41 AM
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Re: Marvel Mystery Oil: Great Stuff

Quote:
Originally Posted by hotajax View Post
My chainsaws sat most of the winter and did nothing. Like me. Anyway, I poured out the old gas and put in fresh Ethanol-free fuel, along with some Marvel Mystery Oil. Holy cow, after about a minute or two, the saw was screaming like a crazed woman. Get some and see for yourself how this makes your work a whole lot easier.
Did you substitute the MMO for regular 2 cycle mix or did you add some in conjunction with the standard mix?
My concern is that it might be too lightweight.

In the past:
Craftsman, MTD, Snapper, 1961 Ford 801 Powermaster, 1992 LB 4.5HP 580546, 2003 LB 10552 6.5HP Duraforce, IH Cub Cadet 105, 2001 Cub Cadet 2146 14HP Linamar 38" deck, love of my life (Sold 10 Dec 2011), 2007 Cub Cadet 2550 22HP Kohler Vtwin 50"deck (Sold 22 Aug 2018)
In use:
1994 JD LX178 sweet little mower, only 15HP, twin cyl, 38" deck, liquid cooled!
1998 JD 445 22HP Shaft driven wheels, shaft driven 60" deck, diff-lock, hydraulic lift, power steering, fuel & temp gauges, fuel injected, and liquid cooled! This machine has it all!
2005 Nortrak NT 254 25HP Diesel 5' FEL, here's a case of cost-cutting, I only need a tractor 3 or 4 times a year

Going to try to stay Liquid Cooled the rest of my life! Hey, it gets HOT here!
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post #15 of 28 Old 05-08-2019, 08:05 PM Thread Starter
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Re: Marvel Mystery Oil: Great Stuff

Quote:
Originally Posted by mowergene View Post
Did you substitute the MMO for regular 2 cycle mix or did you add some in conjunction with the standard mix?
My concern is that it might be too lightweight.
Scientific procedures I used:

1. Mixed up 50:1 2 cycle oil, using a full synthetic oil.

2. Carefully poured a very small amount of Marvel Mystery Oil in the gas tank. Probably somewhere around 1 teaspoon. Then I topped off the tank with 2 cycle mix. Shook it up and fired it up. Oh baby, what a sweet sound.

As a side note, one time I poured a little too much MMO in the tank, and it really didn't hurt anything, it just the gasoline just didn't quite have the kick. But I burned that tankful down, and poured in 2 cycle mix to refill it, and it was fine. Don't be afraid of that stuff. A little does a lot of good for you. Boats, cars, saws, lawn mowers, week whackers, and your wife's hair dryer. They will all run better.

"I've always been crazy but it's kept me from going insane." -Waylon Jennings
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