Marvel Mystery Oil

[John0829]

So, how much would "some" be, added to your fuel?
I remember it smelling rather sweet and pleasant, using it in air tools.

MMO mix ratio is 4oz to 10 gallons of gas, I add 2oz to each of my 5 gallon cans I use for transport before I fill them. I put the MMO into an old Stabil bottle to make it easier to measure. At home I fill my smaller 1 gal. cans from the 5 gal. cans so every engine gets a dose of MMO including the 2 stroke engines. Even my SIL has started adding MMO to his cans since seeing what using it has done for me.

 

[unpossible]

In the late 1990s/early2000s, the MMO jug said it could be used as a fuel stabilizer (among the other claims), and the mixture it called for was exactly the same ratio as STA-BIL. I can't prove this was the case as my bottle from then is long gone.

The longer story --- it must have been very early 2000s when I ran out of the first bottle of STA-BIL I ever bought, their great little bottles with the measuring thing on the top. I was trying to find a cheaper alternative and I noticed MMO had the stabilizer claim on their product... at the exact same ratio as STA-BIL (er...and for fun... it was even exactly the same color to my eyes). So I bought a big jug of MMO (for about the price of one of the tiny STA-BIL bottles probably) and used it refill my STA-BIL bottle. And I've been refiling that exact STA-BIL bottle for 20 years now; I am on my 2nd or 3rd jug of MMO (fuel stabilizer is the only thing I use it for). I've had zero carb/gas-oriented problems in small engines, many of which I had for 15 years during that time (note I do the always-treat-all-small-engine-gas-when-you-get-it approach, and to be ~fair I've also always kept EtOH away from my small engines).

Sometime in the later 2000s I think (?) the MMO jug was reworked and the fuel stabilizer claim disappeared from the bottles. I had a theory at one point that someone bought MMO during that time and removed the stabilizer claim to push customers to a much higher-margin fuel stabilizer product. Or maybe a big distributor forced it to happen, or there was favor kind of thing, or similar. I can't find any evidence of this though of who/how that would have come to be, at least not now; perhaps it has been scrubbed from these inter webs and/or the various brands have changed hands a few times (?) just making it harder to ~trace.

In any case, in my case/situation/use, MMO appears to be effective as a fuel stabilizer (gasoline...I use different stuff for diesel)....; I'm sticking with it.

 

[unpossible]

I hadn't seen John0829's post before I did mine (!)....similar story it looks like and the same ratio.

 

[NoTrespassing]

In the late 1990s/early2000s, the MMO jug said it could be used as a fuel stabilizer (among the other claims), and the mixture it called for was exactly the same ratio as STA-BIL. I can't prove this was the case as my bottle from then is long gone.

The longer story --- it must have been very early 2000s when I ran out of the first bottle of STA-BIL I ever bought, their great little bottles with the measuring thing on the top. I was trying to find a cheaper alternative and I noticed MMO had the stabilizer claim on their product... at the exact same ratio as STA-BIL (er...and for fun... it was even exactly the same color to my eyes). So I bought a big jug of MMO (for about the price of one of the tiny STA-BIL bottles probably) and used it refill my STA-BIL bottle. And I've been refiling that exact STA-BIL bottle for 20 years now; I am on my 2nd or 3rd jug of MMO (fuel stabilizer is the only thing I use it for). I've had zero carb/gas-oriented problems in small engines, many of which I had for 15 years during that time (note I do the always-treat-all-small-engine-gas-when-you-get-it approach, and to be ~fair I've also always kept EtOH away from my small engines).

Sometime in the later 2000s I think (?) the MMO jug was reworked and the fuel stabilizer claim disappeared from the bottles. I had a theory at one point that someone bought MMO during that time and removed the stabilizer claim to push customers to a much higher-margin fuel stabilizer product. Or maybe a big distributor forced it to happen, or there was favor kind of thing, or similar. I can't find any evidence of this though of who/how that would have come to be, at least not now; perhaps it has been scrubbed from these inter webs and/or the various brands have changed hands a few times (?) just making it harder to ~trace.

In any case, in my case/situation/use, MMO appears to be effective as a fuel stabilizer (gasoline...I use different stuff for diesel)....; I'm sticking with it.

They may have removed the stabilizer recommendation after the NTSB claimed it caused an airplane to crash in a 2003 report.

 

[alaarp]

The recipe for gun cleaner
40% kerosene
40% mineral spirits
15% Marvel Mystery Oil
5% Rislone Oil

I forgot about Rislone Oil, similar claims to MMO.
View attachment 807551

Got it. Thanks for the reply.

 

[number two]

WOW-What a hot topic and so many first/seldom posters replying!
Great reading!

 

[WM75Guy]

I use it in air tools. I didn't know there is a version of MMO specific to air tools. I have always used the original MMO.

 

[Williy]

I have seen the MMO that is not listed for air tools and it
dissolved the gaskets in their air tools. I use the Senco oil
I use the Senco 2 inch staple guns one auto one standard
auto just hold trigger also have the 3 inch nailer and a few other
smaller staple guns very seldom need clamps when using staples

willy

 

[sixdogs]

I never used MMO until a Mennonite fellow I know convinced me it was a miracle oil. He uses it as a preventative in his gas and oil and says it makes engines run better, quieter and cleaner burning. He is not one to mince words or waste money so I took his advice and bought my first bottle last week. I saw MMO decades ago but always thought it was some sort of snake oil.

My plan is to put some in the gas of my old Farmall tractor and then the oil. Then go from there.

 

[Flogger]

I have used MMO as an air tool oil for 30+ years. I do not use it in nail guns because it can lead to failure of their seals. I spent 15 years on a service truck in the construction rental industry. Using MMO in my air tools I have never had to rebuild a single tool I also used plugged connectors to keep dirt out as they were transported.
I use Rotella oil in everything I own that doesn't require mixed gas. It has some of the bestspecs and helps keep engines clean. ATF is my diesel additive along with the white Power Service in the winter. I keep MMO in my shops at all times though because it is a true multi tool that helps with many tasks.