I have been watching this discussion on auto gas with interest. I have not seen anyone mention TCP. I have been using it in my Coupe since I purchased it about 2 1/2 years ago with good results so far, no plug fouling, etc. I understand Embry and Riddle University uses it in their fleet with excellent results. Because of the different additives in auto gas in my area I am personally reluctant to use it. In addition, there are restrictions at my home base on self refueling and personally I don't feel it is worth the hassle even though I have an STC for it. It is true that auto gas is not healthy for sight gauges such as I have in my Forney. I recently replaced mine since the previous owner had used auto gas. I will restrict my use of the stuff for emergency situations only.
Charles McKinnie N3050G, GEU -----Original Message----- From: Greg Bullough <[EMAIL PROTECTED]> To: Steve Dold <[EMAIL PROTECTED]>; [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Friday, December 18, 1998 4:30 PM Subject: Re: Mogas > >That's the 'Mystery.' :-) > >For a 1950's era product that looks for all the world like >'tune up in a can' Marvel Mystery Oil is remarkably effective >at keeping valve trains in training. > >I first ran across it in the 80's, when leaded gas went away >and I had a Universal Atomic 4 boat engine that really liked >lead. Consensus was that people who ran Marvel in the gas >were fine. Those who didn't regularly got stuck and/or >burned exhaust valves. > >Those who ran 'lead substitutes' didn't do as well as those of >us just ran the Marvel. > >I have no idea how it gets to the right place to do what >it does, other than some vague hand-waving about 'capillary >attraction.' But, since pulling the head off the engine while >hanging upside down, and then pounding on the valves in between >smelling fuel and puking into the bilge really sucks, we tended to >go with what we didn't understand, and be thankful. > >Greg > >At 02:32 PM 12/18/98 -0800, Steve Dold wrote: >>At 09:00 AM 12/18/98 -0800, you wrote: >>>100LL and want to eliminate the probability of valve sticking...add 4 >>>ounces of Marvel Mystery Oil to each wing tank on a fill-up, plus a quart >>>of it in the oil during the oil change. It does a great job of keeping that >>>top end clean. >>> >> >>How does adding it to the gas help the top end? Where does it lubricate? >> >>As far as I know, oil flows from the rocker box down through the intake >>valve guide, not the other way. Is it supposed to lubricate the exhaust >>valve stems? >> >> >> >>---------------------------------------------------------------- >>Steve Dold ([EMAIL PROTECTED]) http://home.pacbell.net/sdold/ >>Say NO to useless over-quoting >>---------------------------------------------------------------- >> >> >
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