Re: Marvelous Mystery Oil? Say What ?
 

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"INFLAMABLE"???
SInce that is the same thing as "FLAMMABLE" what ARE you speaking about, Skip ?
We were using WD 40 as a propellant in "Potato Guns" maybe thirty years ago, which meant it was "Flammable" then, and I guess even somewhat explosive, and it still is listed as "Flammable."
While I do recall it was safe for shipboard use, that didn't mean it wasn't flammable.:)

WHEN was in NON FLAMMABLE??

Re: Marvelous Mystery Oil?
 

The stuff must work......i've never heard a snake squeek!:D

Re: Marvelous Mystery Oil?
 

Re: Marvelous Mystery Oil?
 

I believe that half a quart is just before the oil change. I believe MMO contains solvents that will clean some of the sludge out of the engine. I used it since my Ford 8N days and in the diesel fuel of my case backhoe. It's a good product. I would not put it into new oil either.
Terry

Re: Marvelous Mystery Oil?
 

Some of the guys up here use two cycle outboard motor oil in their gasoline. I still use the Marvel at 4oz to the tank, each time I top up.

Re: Marvelous Mystery Oil?
 

I had a buddy, a retired gentleman who was a B-17 pilot back in the day, who used to swear he put a quart of ATF in the gas tank of all his cars every so often. I think MMO is the same deal. I know ATF is a great penetrating oil so it couldn't hurt -- too much -- could it? His cars always ran well. He's been gone from us a while now, but I know he had cars with fuel injection and catalytic converters. Probably not OBD-III though, or whatever it's called now. My '03 GMC popped a Check Engine light the first time I had to fillup with 10%, and had to be "recalibrated." Has somebody else tried MMO or ATF in a modern?
Fearless

Re: Marvelous Mystery Oil?
 

I have used MMO in the crankcase (1qt) of all (eight) new motors since 1970, for the break-in change: no adverse effect. I have run it as a winter additive in dire weather, no prob. Also I have u sed it in the gas tank in both old motors and new.
One particular case was a 351 Windsor in a E250, I bought it with a hundred and eight thousand on it. It would back fire, diesel, etc when turned off. The symptoms left and power on hills improved with about seven fill ups. My first experience was a '49 Dodge I had in 1965 it was a smoker I used MMO in the crankcase, the problem was decreased though not eliminated.