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Joined: May 2004
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It's a light oil. It doesn't do anything regular oil doesn't do. I tried about everything including Slick 50 and liquid platinum for better gas mileage. I dont see any use for it at all. Everything that needs to be in your oil is already in your oil. Putting it in your diesel tank won't hurt , but neither will cooking oil.

Last edited by ihookem; 06/23/15.

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I use it in air tools.

Dad is in his 70's and has used it all his life in just about everything. grin

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There was a mech place in Fbks years ago that would substitute MMO for brake fluid in the winter.


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I keep a squirt bottle of it on the work bench. Use it like Kroil or any other all purpose penetrating oil.

Works good in air tools too.

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Originally Posted by Bama_Rick
IDad is in his 70's and has used it all his life in just about everything. grin


I hear it goes well with onions and bell peppers.


Mercy ceases to be a virtue when it enables further injustice. -Brent Weeks

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When I lived in New England, bunch of old farmers use to use it in winter in their crankcases on their tractors... seemed to make it crank easier, or so they claimed....

never ever heard of any negative results from it....

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Instead of a squirt, I keep a punt on my bench. Use it as a general lubricant but I wouldn't put it in a crankcase down here in our sticky weather.

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I am told that it is a good replacement for KY as well.


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The mystery continues.


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I don't believe MMO is ATF by any means. I have used it in my diesel fuel, probably should use it more often than I do.

I also use it as an ingredient when I make bore cleaner, along with GM Top Engine Cleaner, 28% ammonia and peroxide.

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I use to put it in the dampers on side draft SU carburetors. They called for a light machine oil best as I can remember.


Originally Posted By: P_Weed

I never met a gun I didn't like.

SEdge,

I have an AMT Hardballer I can fix you up with.
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When I use to winterized my I/O boat at the end of the year, with the engine running I would pour the Mystery oil down the carb. And when the engine almost would die I would turn the ignition off. The intent is to coat the cylinder walls. It's a bit smokey when you first start it in the spring!

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Originally Posted by K_Salonek
It's about the only supplement/additive the FAA will recognize as beneficial to aircraft, crankcase.


Not true, MMO has never been approved for aircraft use by the FAA. The average inspector will sh*t himself if he sees a can anywhere near an airplane. That doesn't mean that guys running old timey flying machines aren't feeding them a steady diet of it though... wink

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Originally Posted by poboy
The mystery continues.


Indeed, one can but marvel at the mystery of it all.

GTC

Last edited by crossfireoops; 06/24/15.

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Originally Posted by chesterpulley
Originally Posted by K_Salonek
It's about the only supplement/additive the FAA will recognize as beneficial to aircraft, crankcase.


Not true, MMO has never been approved for aircraft use by the FAA. The average inspector will sh*t himself if he sees a can anywhere near an airplane. That doesn't mean that guys running old timey flying machines aren't feeding them a steady diet of it though... wink


Pay attention to this fella, people.

....KNOWS whereof he speaks.

Plays a mean Guitar, too.

Chester, when / where you and the big fella's next gig ?

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from another forum

Quote
70% Light Aromatic Oil (Pale Oil)
- It is a Naphthenic Oil, so while it oxidizes faster than a Paraffinic oil, it does clean and dissolve sludge and carbon well and cleans up after itself from any oxidation. serves as base oil as well. [Naphthenic oils have more solvency and are more polar (they are attracted to metal more), but oxidize faster.

29% Mineral Spirits
- Cleans Varnish very well. General cleaner. Also acts as an antioxidant.

38 parts per million (ppm) Boron
- AW/EP agent, friction reducer, antioxidant

900 ppm Phosporous
- AW/EP agent

1/2% 1, 2 ortho-Dichlorobenzene
- EP agent as it interacts with Iron to form an Iron chloride barrier under any ZDDP or other AW additives. Also very good cleaner/solvent, and friction reducer

1/4% 1, 4 para-Dichlorobenzene
- EP agent as it interacts with Iron to form an Iron chloride barrier under any ZDDP or other AW additives. Also very good cleaner/solvent, and friction reducer

Oil of wintergreen - for the scent
- Not just for the cent, is also a cleaner. may aid lubricity.

Red Dye - for the color
- well this one just colors the stuff


Dave

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It smells real good and is supposed to loosen corroded parts. I removed the spark plugs from my '68 El Camino and squirted some MMO in each cylinder after it had set up for 10 years before I attempted to start it. It started right up but I don't know if the MMO really helped. I used to use MMO in my 2005 Dodge diesel truck by mixing 1 quart of MMO with 96 oz. of Power Service and adding an ounce of the mixture for each gallon of diesel every time I filled up until I found out it did more harm than good. Now I mix a gallon of 2-cycle TCW3 oil mixed with 112 oz. of Power Service and add .7 oz. of the mixture to each gallon of diesel when I fill up.

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Originally Posted by SEdge
I use to put it in the dampers on side draft SU carburetors. They called for a light machine oil best as I can remember.


it would work for that, although working with Volvos and MGs from back in the 60s and early 70s...SU Carbs called for ATF in the dash pots....

to get higher performance tho, 20W50 in them was used by a lot of guys...friend who raced an MGB showed me that.... tried it in my 68 Volvo wagon, and worked real wellin the mountains or high speed running in rural areas or on freeway.. not so much around town...


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If I read all the above correctly, it would seem that Marvel Mystery Oil was once quite useful, but probably or definitely should not be used in modern, high-tech engines. Like so may other good products of yesteryear, its time may be past.


Cleverly disguised as a responsible adult.

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Originally Posted by BeanMan
Marvel Mystery oil is worse than adding nothing according to a lubricity test for injector wear.

17)Marvel Mystery Oil
Gas, oil and Diesel fuel additive (NOT ULSD compliant, may damage 2007 and newer systems)
HFRR 678, 42 microns worse than baseline fuel.
320:1 ratio
10.4 oz/tank
$3.22/tank

http://www.dieselplace.com/forum/76...28-lubricity-additive-study-results.html


Thank you, sir! I will cease using it immediately!

Ed


"Not in an open forum, where truth has less value than opinions, where all opinions are equally welcome regardless of their origins, rationale, inanity, or truth, where opinions are neither of equal value nor decisive." Ken Howell



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