an answer for you. Reply to this topic . Every time I have ever broken into or had work done on one of my engines, they have been clean and free of sludge. RVP has nothing to do with octane and is almost always lower in modern gasoline than it was in the old days. Where did you get your information. Most pump gas runners I know only add lead substitute, not any MMO. https://www.consumerreports.org/car-maintenance/study-shows-top-tier-gasoline-worth-extra-price/. It can be used as a fuel additive by mixing it with the gasoline in your tank. I am bringing this discussion out of the archives. Then, wait for an hour or longer before attempting to remove it. Using Marvel mystery oil in your fuel extends the life of these vital components by providing them with lubrication that fuel alone does not provide. So after a year or two, the STCs
If you ever do get severe valve seat recession, the cure is to install inserts. Ethanol evaporates pretty easily , especial the more you have and older it gets. a 32-degree limit on the Cubs. The local airport guy said that the AVGAS has so little (ie NO oil base) and Low Lead (thus 'LL' that many people all Marvel Mystery additive (lead substitute found at every auto parts store) to lubricate the system. I had a lot of trouble with my snow blower this year. Should one use a 5w-30 or 5w-40 if adding a quart or 20% of MMO to regular oil due to the Viscosity change. Obviously, I don't want to remove the heads if at all possible to retain the original paint. Not sure if still available but have a few years supply. avoided in the smaller and older engines. but results is what really tells the tale. Keep on posting. MMO is basicly automotive ATF. This in turn caused increased vehicle performance and fuel economy. The lead does not remain in the engine, and can't build up on
I don't remember hearinganything about valve seat recession from the mechanics I hung around with,. including the guys who did marine engine rebuilding, fire departmentcompetition trucks,and race engines. Inquiring minds want to
that are most common use MMT and are more like an octane booster. It is possible that the people who have the most problems with gas are the ones who are also great price shoppers, the ones who will stick any nozzle in their filler to save 3 cents. a prop? Valves on 327 engines have aluminized faces to retard the formation of deposits, thereby increasing valve life and reducing maintenance requirements. Well, I've been using MMO for many years now, along with Rislone. Regular use can lead to improved fuel economy. Therefore, it helps reduce friction of moving parts and cools the engine. through directly through the carburetor while the engine is running. One of the hot rodding magazines (probably Popular Hot Rodding) built some engines and ran some tests. Marvel MM13R Mystery Oil - 32 oz. Regular use can improve fuel economy. Re: Marvel Mystery Oil and E10 in our small engines. | Facebook
the carburetor as a droplet, broken up
Dhanley, I believe those engine solvents in the can are nothing but a quart of diesel fuel. Dan Ford, Other websites:
Some people swear by it, some people swear at it,
that lead is added to aviation fuel to boost octane rating, and with the
I don't see any pickle. http://www.marvelmysteryoil.com/index.php/site/mmo/ It's amazing how tertra ethyl lead was used to reduce emmissions way back at the turn of the century? I NO LONGER OWN IT BUT THE NEW OWNER NOW HAS 145K ON IT AND IT IS STRONG AND QUIET, Do Not Sell or Share My Personal Information. The customer rating for Marvel Mystery Oil (MMO) is 4.7 out of 5 stars. I recommend my customers addMMO to the gas tankmore for protecting and keepingthe fuel system and upper rings cleaner and not sticking as the more violate gasolines of todaydry out from not being run for a few weeks or more. I can build an engine, but, I can't drain oil without a mess. Marvel Mystery Oil MM12R - 16 Fl Oz. Works OK in modern fuel injected engines , not so well in old carburetor-ed engines, as they also use too much ethanol in the gas. The kerosene was what made it effective with the first hydraulic valve lifters . Followers 4 . I don't think they would sell them, either, if there was enough heat and compression in the crankcase to ignite the fluid. It's easy! Then I can tell you it definitely improves the fuel economy. This makes sludge and corrosion accumulate and causes damage. You can add Marvel Mystery oil in either the gas tank or the crankcase. Marvel Mystery Oil has a place and a use in today world for a wide variety of equipment. (And no,
Marvel oil is used in the gasoline of inboard and I/O engines as an upper cylinder lubricant, and to lubricate fuel system components,( especially the fuel injectors). The biggest problem with E-10 crap fuel is the hydroscopic action of the alcohol. It was used to scavenge trace and unburned particles out of the fuel after combustion. It will double the life of rings and valves. Jul 14, 2017. Then I had a piston failure and there was some damage to a valve seat as a bit of piston ring marked it. had. Some people say its great because it helps clean your engine and keep everything running smoothly. TEL had been identified chemically in the mid-19th century, but its antiknock effectiveness was discovered in 1921 by the General Motors research laboratory, which had spent several years attempting to find an additive that was both highly effective and inexpensive. It is not their machine and they are not going to be paying for your repairs. venerable taildraggers. The exhaust valve must have been stuck before I sprayed the MMO. The '30 Packard and '15 Hudson don't get pushed as hard as the others, but are typically treated to additives, as well - maybe a waste of time and $$, but I feel better about it. Marvel reduces and prevents varnish and . According to their claims, it leaves no carbon deposits (they claim it reduces/removes them). there were 55-gallon barrels labeled MMO (Marvel Mystery Oil). Reply #2 on: September 30, 2020, 09:06:35 am . Old standbys like Bardahl. The 'lead replacement petrol' wasn't doing any good at all. Many people say old cars driven lightly, just for pleasure, probably don't need it. 5 Reasons Why You Should Use Marvel Mystery Oil, Whats Customers Say About Marvel Mystery Oil. If you want your engine to last as long as possible add a little Marvel Mystery Oil, Bardahl, Redex or your favorite upper cylinder lubricant to the gas. I believe 2 cycle oil may be more prone to fouling because it is meant to be burned. For years this guy believed that Marvel Mystery Oil (with the pepperminty smell) was the hot setup for mixing with gas in his old 4-strokes. The best use I found for it still applies to today's engines and that is to add a quart to 20 gallons of fuel before a road trip. -- Dan Ford That Marvel-ous Mystery Oil This oil helps your car start more quickly in cold temperatures and keeps it running smoothly. Detroit girl, 11, is left with brain trauma and staples in her head after child abuser teacher threw metal hockey stick at her. They said that it caused oil leak in his Chevy Silverado 2004. Just finished my third overhaul, this time I had to replace the guides for the first time and fix 15 cracks in the block. To answer I'd need to know which SBC is being discussed. Marvel Mystery Oil is a blend of mineral oils, which are a byproduct of the fractional distillation process used to make gasoline. per 10 gallons of fuel). Lead (TEL) was a necessity. Re: Mystery Oil Substitute? Our editors pick the products & services we write about. However, Marvel Mystery oil stands out because it is cheaper than Seafoam and used for a variety of vehicles and equipment. Never saw that before but was RPO ZL1. I also put a qt. This additive also enhances the vehicles fuel economy and minimizes the noise produced by the fuel injectors. Before that is was all the hype about new cars being unleaded only. Using a top oil like Marvel is fine for keeping carbon buildup on the stems. 2-3 ounces per 10 gallons is enough. formula was purchased by ALCOR. He explained why in a post on the Cub Builders mailing list,
I also add it to my wifes gas engine fuel tank as a fuel system cleaner & lubricant.. This is right. gasoline ignites, it is vaporized and soaks into the carbon buildup
Is Marvel Mystery oil good or bad? Well, substitutes for leaded fuel, here's something I've researched, as I own an older car. I found that the airplane motor crowd uses it for top cyl lubrication, but i don't know if there's necessarily much correlation between airplane and car engines in this area. were taken off, the mogas tank was topped off with 100LL, and the
Back in 2016 I started having poor idle symptoms and stalling at stops. on Marvel and its alternative, TCP. It was thought that since the automakers were induction hardening valve seats in the unleaded era that it must be necessary. Marvel Mystery Oil and Lead substitute. Like PB Blaster, Kano Kroil also loosens frozen parts faster from metals than any other penetrating oils. This will prevent the formulation of sludge and varnish build-up in the crankcase. Nothing else intervened and nobody else touched my engine. Several old mechanics from the 1950's told me it was early auto transmission fluid with about 25% kerosene. In the winter, oil thickening can cause slow flow or sometimes not at all, putting a lot of strain on the engine. So I can imagine any lube, esp MMO, added could help a bit. It only takes a few ounces of
answered, I do, how often do you have to change your brake pads?). So, "How do it woik?" When the fuel in the tractor is about a month old, I drain and filter it then throw that into my '71 Chevy van. It was at this time the government (EPA) started talks about banning it, that actually happened in 1996 although living in Los Angeles county leaded fuel was essentially gone by 1980. He also loves making connections and friends in the automotive industry. Which brings up an interesting topic: yes most mass production engines under about 10:1 compression and 4" bore (see "flame propagation rates") are reasonably safe under light duty on 93 PON. normal drop. EAA has an answer, after 5 different people and
Marvel mystery oil lubricates the entire fuel system-fuel pumps, fuel injectors or carburetors and the top portion of the cylinders. fouling syndrome. The size of the valves was only increased from 1.625 to 1.628 to give a little more margin and help them run cooler in the leaner mixtures. Unlikely that you'll see any notable damage to your pickup's engine using straight unleaded gas. OR THE CROWING OF THE NOBLE COCK BENEVENTANO. Period. Also the single quad L88 at 430 hp and the pundits top tripower at 435. This MMO received a lot of good comments from users. Looks like the 185 hp version was used in larger straight trucks. Added to oil it prevents valve sticking and clatter, fortifies . in the bottom of the oil kidney. ATF will do the same thing inside the engine at a lower cost. Pretty sure it didn't require any special fuel back then. The automotive gasoline option. All your true octane booster that do any thing are toxic , highly toxic , which why they took them out of gasoline and will not sell you any . and a lot of people are using it. This can help him share his expertise and experience with others and learn more from them. Back in the 50's the Marvel Co. sold automatic dispensers for their product. It was buried in the hole over 4mm down (I kept adjusting the lash) by the time I changed the head. Think about the whole scenerio . In a hard sealed full container (no vent), it should last a while. and with the wind whistling through the gaps between the windows and the
LOL. Neither should be used for the first time
Modern gas has lot more aromatic daisy chain hydrocarbons in it and a higher Reed vapor pressure. Change the oil and filter regularly, take it out on the highway a few times a year and blow the carbon out and when required in 75 or 100 thousand miles when you have to open the engine check for valve seat recession and report back. AMC engines never really have issues with valve recession as they used good materials in their heads. the fourth is a tank of av-gas (100LL) Either of these work OK.
does. It was a big problem! Also, some others stated that the price of this additive is quite high. Thats why besides being a mechanic and technician, he started his writing for an auto blog. The leading theory is
much of northern New England's gasoline comes arrives. Bob's article is followed by an email I received from Terry Lutz, expanding on Marvel and the alternative TCP. You need to be a member in order to leave a comment. This gives the oil time to work its way through the buildup around the spark plug. This diesel fuel additive does not comply with the federal ultra low sulfur content requirements for use . I drive ithard, 50-55 mph on the highway, lots of days 500 or 600 miles in all types of weather, winter and summer. scavenge the lead from the fuel to keep lead from ever forming on vital
MARVEL Mystery Oil. YMMV.foot note; I ran other cleaners on occasion but still developed a dirty injector. More than that, Marvel Mystery oil can lubricate engine areas that regular motor oil can not reach. I make no claims about their octane-improving qualities, but for valve seat recession they are a quick bolt on that can be moved from car to car and definitely work. Post in the forum instead. there's some xylene in there, too. know, so I called the 800 number on the side of the can. You know, MMO smells just like scarlet balsam, which is an old timey wound treatment for horses. This cleans the carbon and sludge collected in
To go into more detail, the mechanic who advised me to use it said it would dissolve varnish and gunk, free up rings, etc. You know when you pull a magneto check at the runup area after
Of course, when unleaded fuel came out, there was no
I thought I had successfully purged all that stuff from my brain like a bad dream. So it must be scrubbing a bit of carbon off. Drive with unleaded and be happy. tank of fuel. Your donations help keep this valuable resource free and growing. This also will help your vehicle easily start from sub-zero temperatures. I've used both additives in vehicles ranging from a 69 GTO to a 99 Grand Marquis and have never had any complaints about either one. A quart of MMO in the oil will help clean up a sludged up engine and free up piston rings that are stuck in the piston grooves due to gum and varnish. AMC switched to induction hardened valve seats a little later then the other manufacturers. further need for TCP. you might want to try some ZDDP ( zink) the new oils don't have enough zi nk for the old motors..search it on goggle for more info. and that was far too often for my taste. So does Amazon if you click through to that store. July 9, 2019 in General Discussion. There are a lot of debates about Marvel Mystery Oil is it good for your car or not? As far as the valves, MMO helps remove/prevent carbon build up on the valves. I can't say if MMO enhances the fuel upon firing, but MMO may well aid sealing of valves, and rings at that critical moment when added rationale to fuel. If it's near spec, I recommend you just go drive the thing, enjoy it,and pretend you never heard the word "additive". How much MMO do you use? I have been running unleaded in the Ambassador for 230,000 miles and never had valve seat issues. We are putting 89 octane in, and adding a can of lead substitute every tank right now. Check the compression. my great uncle was a ww 2 army air corp airplane mechanic .. he swore by the stuff .. he put marvel in everything that ran on fuel.. he instilled his great wisdom to me an so do i.. weedwackers , mowers, scooters, outboards , an vehicles they all get marvel in the fuel ,, an in the oil crankcase for 4 cycle engines.. 2 cycle / 4 cycle ,, they all get treated every fill up .. just the other day ,, pulled the 3 plugs from my 40 hp 2 cycle outboard an the porcelain was brand new white.. an i ran them all summer since spring .. anyway,, this stuff works .. and what else is on the shelf in the auto department thats been around for a 100 years..!! As Matt said it may not be necessary but doesn't hurt. What fuel or additives we are talking about depends on which SBC (the 275hp 327 was a really nice Impala combo but required premium fuel). The problem turned out to be one of those new condensers. Puts me in a bit of a pickle! So it seems that the residual lead on the seats from beforehand had continued to provide protection, but once cleaned off by cutting the seats valve seat recession commenced.