Marvel Mystery Oil

slowrev · Jan 9, 2006

Bird,
Thanks for the reply. The MM Air tool oil was in a small plastic container with a small nozzle.
I had used only MM air Tool Oill in this tool. Both of the little nylon ? valves were all crumbly.
All I know is I will not use it anymore. After I found what had happened to my air tool, I used the rest of the oil to lube some shed hinges /forums/images/graemlins/smile.gif I am now trying another brand of air tool oil.
Ben

Bird · Jan 9, 2006

Ben, I don't blame you for changing oils if you think the oil is what caused the problem, but I really doubt that was what did it. Those mushroom valves are used in quite a number of air tools, in various sizes, and made of various compounds, and having them crumble and have to be replaced is quite common. I used to keep a variety of them on hand. When I replaced them, I usually took the tool completely apart because some of those small pieces may have obstructed air passages and sometimes they even get into the air motor and get melted in there.

stevenf · Jan 9, 2006

After Prunty and Shady got settled in this has been an interesting thread so I have to post an experience I had with MMO and an old Evinrude engine. I bought a Texas Maid aluminum boat years ago with a 40hp evinrude on it that hadn't been run in 20 or so years, I wanted the boat not the big heavy engine but it only cost $400, trailer and all so I took it. I refinished the boat and recarpeted it and replaced the engine with a modern 48hp evinrude to lighten the load but I kept the old engine to tinker with it was siezed, locked solid. I pulled the plugs and filled it with MMO and every day I'd pass by it and work the prop back and forth. After about a week it rolled all the way thru. I mounted it on a transom next to a 55 gallon drum of water, drained the MMO out, put in new plugs, hooked up the gas and fired her up. I had a guy that walked by everyday while I was rebuilding the boat and he stopped and asked about the old engine while it was running he said it brought back old memories and would like to buy it if I'd part with it. He gave me a thousand bucks for it and mounted it on an old bass boat, the engine is still running 5 years later. Thank You MMO! I probably could have used any penetrating solvent and done just as good but I'm a MMO convert I don't really care what's in it, $600 to the good and a boat.
Steve

Bird · Jan 9, 2006

( Texas Maid aluminum boat )

Which one? We had a 14' Texas Maid Falcon with a 40hp Evinrude and then later Dad traded it for a 16' Texas Maid Fiesta with a 35hp Evinrude, both were used when Dad bought them, and between Dad, me, and my two brothers, both of those boats saw a lot of use.

stevenf · Jan 9, 2006

It was unique as someone had taken some liberties with a saw and plexiglass but it was around 17' deep V with a covered 6' bow that had little windows on each side and a hatch in the very front it was great with the kids growing up we could get 2 young skiers or one adult up and when the kids got tired they'd crawl up in the bow and sleep. The only thing wrong was in choppy water the covered bow was riveted and it would sound like the world was ending from the vibrations and pounding of all that sheet aluminum. It was our first boat but certainly the most memorable. I've since discovered a new love and I sold our last boat a 21' Polar deep sea to help aquire it, It's orange has 4 R1's and 90horses and has proven far more helpful at the ranch since my biggest lake is only a acre or less I wasn't getting much seat time anyway, right now with the drought the acre or less lake has turned into a really deep dry hole. Maybe we should start a new thread called praying for rain in Texas.
Steve

stevenf · Jan 9, 2006

Bird, I just did a google search on Texas Maid boats I didn't realize they had become a coveted boat, when we owned ours it was all we could afford. It looks like maybe the little windows were supposed to be there as all the pictures I found on the web included them. It was very similiar to the Fiesta but I'm pretty sure it was around 17'. One big thing I remember was when we were deciding what engine to put on it and how many people it was rated for by the coast guard I called them and they had a formula LXWXH divided by something and the answer you got based on todays formula was you could put up to a 100hp engine taking into consideration the transom strength but you could haul something like 10 people because the sides were so high and the beam so wide. Needless to say when I was putting seats in it I only planed for 6 folks or I'd have needed a larger engine to get it on plane that was a big boat for as light as it was, one good wind while fishing and you'd be staring at the medina dam up close as all that metal above water line caught a lot of wind.
Steve

Bird · Jan 9, 2006

Steve, I don't remember what model they called them, but I remember the boat you're talking about. It was a step up in size from the Fiesta. They looked much alike. The Fiesta had the hatch in front of the windshield, but didn't have the windows. Naturally, I would have preferred an even bigger motor when I was a youngster, but all Dad wanted (and all I'd want now) was a way to get to the fish. The Falcon with the 40 hp was a lot faster, but we had a couple of pretty good scares in it when we got caught in high winds and waves on Lake Texoma, so the Fiesta was much better for that.

rswyan · Jan 10, 2006

( but I really doubt that was what did it. )
Probably true - I've been using Marvel Air Tool in a Shrader-Bellows in-line oiler for my air tools. In the 20 years I've been doing so I haven't had a problem with any of the tools, which included a 1/2" CP impact wrench, 1/2" Craftsman impact wrench, 3/8" Craftsman air rachet, 3/8" Craftsman butterfly, a Craftsman cutoff tool, Craftsman die grinder, and a Harbor Freight die grinder. Of course I don't use them every day either - still the oil has been in some of the tools for quite awhile.

SkyPup · Jan 10, 2006

I've used only MM oil in all my air tools over the last twenty years without any problems whatsoever, except when I get it on my hands it is very oily.

ToJo · Jan 12, 2006

I have suspected for many years that Marvel Mystery Oil is nothing more than automatic transmission fluid relabeled. In years past, before emissions control and electronic ignition systems, it was probably a beneficial additive and it probably did what the distributor claimed it would, i.e. lubricate upper cylinders, valves, clean lifters, etc. After all, transmission fluid is high detergent, low viscosity oil. I'm not sure that it is a benefit any more because of the emission systems and electronics in late model automobiles. I restrict it's use to my air wrench lubrication.