Marvel Mystery Oil

Marvel Mystery Oil

Has anyone ever heard of this? supp. to be added to gas, should free sticky valves, rings, get ride of carbon?

anyone using this and has any information?
thanks
werner

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Re: Marvel Mystery Oil

There have been countless claims of the benefits of MMO for decades.  None of them have been substantiated by scientific study.  I wouldn't put it in my airplane.

Walter

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Re: Marvel Mystery Oil

Werner: I have a 64 172. Had some trouble with sticky valves. I use MMO all the time and seldom have any problems. I use it in the gas at one ounce per gallon. I also put it in the engine occasionally. Give it a try. YOu will not be dissapointed.

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Re: Marvel Mystery Oil

be  careful..as far as I know Avblend is the only FAA approved additive for oil.  If you insist on using the Marvel I would treat it as experimental.  Besides, if I knew I had sticking valves I wouldn't trust magic additives to cure it (Marvel might help prevent sticking but there is no proof of this in studies.)  Sticking valves are serious business, if not corrected you can trash a cylinder/engine real quick.  Pull the jugs and inspect the valve stems, guides,etc. to be sure!  Steve VW

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Re: Marvel Mystery Oil

Put it in my motorcycle fuel and it gummed up the carburetor so bad that engine would not accelerate. Had to clean the carb out. DONT use it.

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Re: Marvel Mystery Oil

I use it in one tank of gas about every 100 hours (between inspections).  I have found that the compressions are better if I use it close to the time of the inspection.  I have one cylinder that has been a problem, but fly 5 hours worth of fuel (one tank) with MMO and bingo, it is as good as the others.  This is on an IO-520 with fuel injection.  I have not seen any negatives from using MMO, only positive effects.  It sure is a lot cheaper than AVBLEND.

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Re: Marvel Mystery Oil

I have been using it and the previous owner used it at the rate of 4 oz/10 gallons of avgas.  This seems to do what's promised and it is available through your local auto parts places.  I have had no stuck valves since I acquired the airplane in December 04--mine is a 1949 Cessna 170A.

RICHARD HALL
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Re: Marvel Mystery Oil

I use MMO in all my planes. I won't use anything else. AvBlend is expensive and I can't tell it works. As for MMO I use it in my oil and and fuel. I a high time engine in one plane and stuck a valve. Started using MMO and the old gal is still flying and doing great. Yep I also use in in my old tractor as well as my 2004 GMC. SO, if there is someone that says don't use it well then that is ok. THey are right that it isn't FAA approved. That is why it is much cheeper to use as the Government hasn't stuck there nose in it and created 6 mile long paper work and lots of cost to manufacturer. So, Good luck and I do believe in it and use it in mowers and everything I have. VERY GOOD STUFF>
Happy Flying.

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Re: Marvel Mystery Oil

John Wrote:
-------------------------------------------------------
> Werner: I have a 64 172. Had some trouble with
> sticky valves. I use MMO all the time and seldom
> have any problems. I use it in the gas at one
> ounce per gallon. I also put it in the engine
> occasionally. Give it a try. YOu will not be
> dissapointed.

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Re: Marvel Mystery Oil

Was having some performance problems with my 70's model 172. Everything checked out  ok and we narrowed it down to possibly a sticking valve -I added some to the gas and oil and performance is now back.

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Re: Marvel Mystery Oil

A stuck exhaust valve often results in an off airport landing or worse.

Stuck valves are caused by carbon buildup in the valve guide due to wear or bellmouthing of the piston end of the guide.

Stuck valves seemingly cure themselves, for a while..

Consider that any MMO that is introduced into the combustion chamber has to endure a flame front of around 1300 degrees. what are the chances that any of the MMO mixture remains to do anything for the exhaust valve stem?

IMHO usnig MMO to cure stuck valves is whistling past the graveyard.

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Re: Marvel Mystery Oil

Cessnadon  You are right I never found a overhaul to a engine problem  to be repaired from a can. If you have a engine problem FIX it.You'll loose everything to take off with someday with a dead engine. Is your aircraft only worth the price of a can of additive.What else will you do to save Money. I won't buy that Plane.  ANGELA

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Re: Marvel Mystery Oil

Hi
My name Ted Bamford from Pembrokeshire West Wales U.K. I have been using MMO in my Cessna 150L for some time (4 yrs)100ll can cause lead on the valves etc I put 2oz to 3oz in 10 Gallons of fuel, I also have st for using MOgas and I use it in that also,I find my plane runs smoother, fuel seems to last longer and the engine was stripped down last year, no sludge in the oil box, filters clean as a whistle the engine was very clean indeed my engineer has started using it now. I call MMO guardian angel of engines and I mean ALL ENGINES. Regards To all Ted.

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Re: Marvel Mystery Oil

out of a can problem solver. The next time you are getting aboard an aircraft say 15 people let the pilot say she's had a valve thats been sticking but  I'll add a can of this stuff and all will be ok. Now you'll have lots of room for luggage. passengers moved elsewhere. what causes your engine to need it and mine not?If you like it use it. I don't. proper mixture and  proper plugs usually corrects these things.

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Re: Marvel Mystery Oil

I have a lycoming 0-540 that I was seeing increased oil consumption (1 qt for every 3 hours) but it had good compressions and ran nicely. Over the summer I took a long XC and ran 4oz per 10 gal to gas religiously for 25 hours. At the end of 25 hours I had to add 1/2 quart of oil. I'm a believer.

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Re: Marvel Mystery Oil

I just saw your entry. Can you tell me where you obtain MMO in UK, please?

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