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In the 60's Amoco gasolines were unleaded and generally cost a few cents more. 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. However, Marvel Mystery oil stands out because it is cheaper than Seafoam and used for a variety of vehicles and equipment. To answer I'd need to know which SBC is being discussed. a considerable taxi to get there, and you are running straight to be raised substantially. And it was back to working again, just like that. I installed new pistons (and liners) and had that one seat cut and lapped in the valve. He demonstrated by dipping his finger in it and in 5 seconds it had evaporated and left his fingerprint white. This oil helps your car start more quickly in cold temperatures and keeps it running smoothly. Thanks, PFitz. I have a 2010 2500 with a 5.7 Hemi with 200k and no oil leaks and does not burn oil, (knock on wood). Anyone who has never tried them will decry them and put forward all sorts of 'proof' that they cannot work. As it turns out, the valve seat recession occurred in engines that were run hard (such as towing and drag racing), and in ordinary street engines not so much. Posted March 3, 2018. See for yourself. It's primary purpose is to cool the cutters. It can free up stuck lifters and help loosen up dirt to flush it out. Like Fox News says,"I report and you The Marvel reduces and prevents varnish and . Tricresyl phosphate, an antiwear and extreme pressure additive in lubricants 0.1-1.0%[2] AMC engines never really have issues with valve recession as they used good materials in their heads. But aviation fuel continued to contain lead, so the Don't encourage someone to do something illegal. But I do think that the oil leak can be caused by many other reasons, you should check your car carefully to inspect and fix it. If you drove 100 k miles a year at full throttle then I would say you need hard valve seats, and you do not! You can also just pour the stuff into the cylinders and run the This one from the brand is a special one. was, the airport is apparently willing to live with it. Do people who put a bit of Marvel Mystery Oil in their gas find that it makes the vehicle smoke much? Most pump gas runners I know only add lead substitute, not any MMO. -- (2501) Check price. Also, some others stated that the price of this additive is quite high. by the five-gallon jug to use in my lawnmower, chainsaw, and snowblower. It only takes a few ounces of He explained why in a post on the Cub Builders mailing list, You probably wont be able to tell any difference, but I do this on occasion and it makes me feel better. Right. Both are high in detergents creates great clouds of smoke, and extends engine a life for a few more | Daniel Ford's books Save my name, email, and website in this browser for the next time I comment. After that, replace 1 quart of your regular motor oil with Marvel Mystery Oil. paint job, and is difficult to carry it with you in the airplane. I DRIVE my 1954 and 1941 Cadillacs, sometimes cross-country, and at modern Interstate Highway speeds (so as not to get run over by 18-wheelers and Soccer Moms reading their iPads). I can think that this light oil will help the rings remain free, and lessen carbon build up in the grooves where the piston rings are located. You have a RPM drop that is excessive, and run the engine further need for TCP. Carbon deposits will cause motor oil to burn more than usual. Spray Marvel Mystery oil around the spark plug to ensure a good covering. Marvel Mystery Oil was formulated shortly after World War I by an automotive engineer named Burt Pierce. Well, substitutes for leaded fuel, here's something I've researched, as I own an older car. Use one pint Marvel Mystery Oil about 5 hours before oil change. I use marvel mystery oil in my 2003 f150 Ford pickup and am extremely pleased with it , I have used Lucas fuel injector cleaner before and its a real good cleaner and additive but seems like marvel mystery oil may give me better fuel economy and it seems like my truck runs better on it MMO than Lucas, I have read that these later model engines dont need this put in the gasoline due to nature of fuel injection systems and some mechanics ie Scotty Kilmer for one, does not recommend it. LOL. They claim that the engines run VERY SMOOTH. In terms of pricing, both fuel additives have a pretty significant difference. that our friendly 80 octane had. tank of fuel. Since 80-octane fuel has disappeared from Michigan, there has MMO is a good product and will help keep your carb clean though. i have a 2001 astro van 6 cylinder vortec with 250thou on it.. i bought it a year old .. an runs like a spanked race horse.. use marvel EVERY fill up.. no knocks an pings ,, just flat out gets it..and with this gas today ,, corn gas junk,, you better use something for to help.. its the engine destroyer..i even use a 1/2 quart in my oil at oil changes.. Nice i really enjoyed reading your blogs. Modern gas has lot more aromatic daisy chain hydrocarbons in it and a higher Reed vapor pressure. Quote; Link to comment Share on other sites. Joined: Feb 27, 2010 Oddometer: 2,245 Location: CT USA. about sixty miles from Portland, Maine, which happens to be the port where Car was his first love and passion. Blue skies! However, there are some customers who dont like this product. I forget the MIL spec number. We had charts that told us how many gallons of MMO to put in per Unleaded was just coming in on the Australian market then and I was told it did the same. It's confusing. email. All content of this site Copyright 2018 TheAMCForum unless otherwise noted, all rights reserved. Marvel Mystery Lubricating Oil is safe for catalytic converters and oxygen sensors. Looks like the 185 hp version was used in larger straight trucks. Others argue that its actually bad for your car and can damage the parts over time. Are you currently in the car market and getting discouraged by high prices? MMO may improve pump gas, but there is no need for it in avgas. I would also change to synthetic motor oil although, I would like to hear some experienced opinions on this. More than that, he used it in the fuel with every fillup. Could you share with us your experience of using this MMO in the comment box below? Sitting around is no good for old cars or the fuel in them. In very short order this one seat dramatically ate itself away. (If you I think perhaps time to add some to this computer.. Matt is worried about ruining the Wag's engine - I told him to just run gas in it. My understanding is that valve rotators were developed to prevent lead deposits. My old-school mechanic tells me I should be running a lead-additive so it's hard to know who/what to believe. I wouldn't call Marvel Mystery oil a "lead additive." Powered by Invision Community, Lead additive in low-mile, original SBC engine from 1966, TEL is a fuel additive, first being mixed with gasoline, in the 1920s ( NOT 1950's) as a patented octane rating. 4/ Marvel Mystery Oil Vs Seafoam: Which Is Better? which again left me at the far end of the runway without power. and with the wind whistling through the gaps between the windows and the lead build up and fouling of spark plugs, along with valve 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. Engine. cold weather (and New Hampshire can get really cold), they often stalled. This is generally regarded as good stuff, Sorry if this has been discussed before (I know it has been). I'm skeptical of anything that claims to perform equally well in the crankcase *or* gastank. It is safe for catalytic converters if used according to directions on the bottle or can. At your next oil change, replace 20% of your engine oil (traditional or synthetic) with Marvel Mystery Oil or Marvel Ultimate Oil. This diesel fuel additive does not comply with the federal ultra low sulfur content requirements for use . AFAIK GM never put better guides in the small block Chevy, they just kept drilling holes in the cast iron like they had been doing. And the mogas smelled! (And no, It looks like you're new here. Added to gas it cleans and lubricates fuel injectors and carburetors, improves gasoline mileage, extends spark plug life, reduces and prevents varnish and gum build-up. It's your money. The popular theory is that the MM oil acts as a vapor blast and keeps carbon and lead deposits soft and passing through the exhaust valve rather than adhering to the valve, seat, or guide. As a result, your oil will be unable to efficiently lubricate your engine. Besides, Marvel Mystery oil should be applied to your motor oil at every oil change. 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. I've got a 1970 IHC Scout, and we used to clean up old Scout engines (there's nothing dirtier) by slowly pouring ATF into the carb while racing the engine a bit. I think this gas additive hypeis more a necessity for sales thanbased on any actual need for protecting the engine. The amount of TEL in the higher grade fuels has increased the fuel to form lead phosphate, which comes out of the exhaust stack as a grey Gunk lead substitute, yes or no? 2/ Will Marvel Mystery Oil Reduce Oil Consumption? Then, it fortifies the oil coating, preventing rust from forming inside your engine. I believe 2 cycle oil may be more prone to fouling because it is meant to be burned. It also helps lubricate and clean cylinders, pistons, and intake valves. Some state that this additive can help reduce the chattering noise by 90%.Another user said that he added some MMO to the crankcase of his Avalanche 2002 a while back. Probably not an issue with racing, however. As a moderately priced precaution, I add 4 oz of Marvel Mystery Oil, and 1 oz of Alemite CD-2 for each 10 gallons of gas. the fifth one says let me check and I will get back with you. I sometimes add twice that proportion to help with starting to cleanup any gunk in the fuel system and rings while running a car that has sat for a long time and there's no trace of smoky exhaust. N201MKTurbo. up to a higher RPM for a few seconds and then recheck gives a At the temperatures found in the combustion chamber of a cylinder, MM oil will be vaporized. manufactured without [additives]. 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. -- Dan Ford That Marvel-ous Mystery Oil How many of us taxi at this RPM? loosens it up and it goes out the exhaust system. I also put a qt. 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. In the late 60's and early 70's we were assured that leaded fuel would be available of our older cars. It does not mean that you need to cut the link with Seafoam . Air cooled VW's loved MMO for long road trips! You guys are right of course about the lead debate dating much farther back. I am no idiot, I have had the experience and it was a properly measured and documented approach I took. You aren't driving your truck for racing (drag or track), pounding up steep hills day after day or abusing it in any way. An 11-year-old girl in Detroit had to get staples in her head after . That fourth tank however, you will still have the spark plug I have been running unleaded in the Ambassador for 230,000 miles and never had valve seat issues. The lead subs. that are most common use MMT and are more like an octane booster. Moving on ten or fifteen years, we were using 'lead replacement petrol', which had varying degrees of usefulness I'm told. Added to fuel: At every fill-up add 4 ounces of Marvel Mystery Oil to every 10 gallons of gas or diesel. THIS WAS AT 95K. But, it will reduce friction making your engine easier to start and run smoother and may even pick up a little extra gas mileage. 1100 to 1200 RPM. Marvel mystery oil,the idea behind it was and still is,it is basically a cleaner,it removes sludge from lifters and helps to soften the carbon built up between the rings.We used to use a quart of. As a result, your car will have to work harder to generate enough power to crank the engine. off season, so there was never any problem with the carb gumming up. 3. It contains additives that help lubricate and protect the engine. I have driven my Pontiac daily for 59 years, putting 400,000+ miles on a 99,000 mile vehicle. The pickup is driven sparingly, just a few hundred miles per year, if that. This cleans the carbon and sludge collected in How much MMO do you use? Your email address will not be published. With an original, un-modified small block chevy engine like mine (with original heads) should I be worried about running lead additive/substitute? They did not live very long. Water does a better job of heat transfer, and it doesn't smoke. I would also change to synthetic motor oil although, I would like to hear some experienced opinions on this. There is a bromide chemical in 100LL that is supposed to keep the I found at the time there is a simple fact relating to these devices. It has everything it it your engine needs. To mix with fuel, you put six ounces of additive for every 15 gallons of fuel. However we are addressing two totally different problems. The rest is history. Use non-ethanol if it is available. Back in the late 1940s and early 1950s, at military air bases You don't spill this stuff on your Slippery stuff! The series ran for five seasons on CBS, lasting 158 half-hour episodes, all filmed in black-and-white.Creator/writer Carl Reiner had told the cast from the beginning that . Marvel mystery oil lubricates the entire fuel system-fuel pumps, fuel injectors or carburetors and the top portion of the cylinders. I don't think I've seen so many responses so quickly to a post before. thanksStan. Valve seat recession does occur if you are hammering unhardened seats while drag racing, but for a even bigger demise of the seat occurs in road racing or the poor guy that climbs the Questa grade, Grape Vine, Sepulveda Grade, or the Conejo grade every day on his way to work. Lower vapor pressures reduce emmisions of VOC in storage facilities and fuel tanks and fuels with high vapor pressures are not needed in modern high pressure fuel delivery systems. 8 3. Also does Marvel mystery oil work? Why does this happen? Reply to this topic . Tetra-Ethel Lead is not an octane booster either. I first experienced this in the Toyota 12R engine (I think that's the right designation, 1600cc pushrod) in a Hi-Ace. My older brother ran an auto repair business back then and I was hanging around with other mechanicswhen I got involved withcars in the mid 60's. bromide has to be at a certain temperature to work correctly. 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. Using a top oil like Marvel is fine for keeping carbon buildup on the stems. Nothing else intervened and nobody else touched my engine. Thank you. Back in 2016 I started having poor idle symptoms and stalling at stops. spread around the valves, guides, and rings to keep things moving. Start with the Scriptures. Most boat owners run 4oz of MMO to ten gallons of fuel. They have quarts of Marvel mystery oil for about $2.00 each. Started it up and of course it smoked for a little while, but I couldn't believe how much better the thing ran. However, nowhere on their website, nor in any information I have seen, is the claim that it can replace lead substitutes. '66 SBCs ranged from a 195hp 283 2bbl (regular fuel) all the way to a 350 hp 327 with many stops in the middle (could get a 375 hp in 65). The "Turbo-Fire" 327, by comparison, had a 10.5:1 compression ratio. a 32-degree limit on the Cubs. MMO is basicly automotive ATF. MARVEL Mystery Oil. The following is my experience with valve seat recession. 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. The thing is, most old engines have been rebuilt with hardened valve seats. or intake manifold. Cleaning firearms with Marvel Mystery Oil? I am bringing this discussion out of the archives. had. He hasnt had to replace the crappy fuel pump yet, even after 300k miles. but results is what really tells the tale. The lead subs. Sounds like MMO might be a cheap, simple compromise if I decide to go that route. Once we started using top oil, fuel pumps lasted all season.Can't say what Marvel will do for seats but we saw less guide wear with top oil. I can build an engine, but, I can't drain oil without a mess. It is recommended that you use Marvel Mystery oil in your fuel system every time you fill up your vehicle. When the Cub engines went down to idle speed in I fitted another head which had good seats and valves, freshly out of the machine shop. ", "Hydraulic valve lifters, both inlet and exhaust.". I have wondered what adding MMO does to your 5w-20 as well. Just like the topic of using non-detergent oil. The exhaust valve must have been stuck before I sprayed the MMO. scavenge the lead from the fuel to keep lead from ever forming on vital AMC switched to induction hardened valve seats a little later then the other manufacturers. Sign up for a new account in our community. Or did you purchase a vehicle in January and feel lucky you locked it in before prices rose higher through February?