Carbon deposits will cause motor oil to burn more than usual. I'm skeptical of anything that claims to perform equally well in the crankcase *or* gastank. 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. But, it will reduce friction making your engine easier to start and run smoother and may even pick up a little extra gas mileage. There is a bromide chemical in 100LL that is supposed to keep the That said, additives probably can't hurt and if they make you feel better/safer when driving the truck, then you should use them. Don't listen to them. the fourth is a tank of av-gas (100LL) Either of these work OK. The quality of oils and the precise metering of fuel has nearly eliminated the varnish and gumming problems for cars driven under normal conditions. You can look up the MSDS sheet for what it's made of. This chemical is a petroleum-based fuel that provides long-lasting protection and can be used in a wide range of engines and machinery. The main thing is:Drive your truck and enjoy it. Add To Fuel To Clean Engines And Increase Gas Mileages. Understanding that the various brands of what I call 'tin canisters, which are marketed under many names, worked to save valve seats by leaching tin into the fuel, I ordered one. If you have a question and call, Petersen has because the gasoline comes from a region where ethanol is not used. The octane is in how the fuel is refined and what "CUT" it is is. A nice fellow Main Menu. But the instructors hated it, one lad especially who got It does work well though to remove the sludge in the oil pan. | Facebook A mechanic saw me doing that, picked up his jaw, and told me to use MMO in the oil. Tough high alloy gives extra durability. Last edited: Mar 24, 2011 My wife said no FJ! Our editors pick the products & services we write about. I had a lot of trouble with my snow blower this year. AMC must have hardenned them deeper. All the other valves and seats were untouched. It has everything it it your engine needs. I use it at every oil change to replace one quart of new oil and use it regulary in my fuel tank. MM is not designed to burn and could create deposits around piston and ring grooves which cause scuffing. Sorry if this has been discussed before (I know it has been). Personally, I was sorry to see the mogas go, because I bought it in crank case a week or two before oil change. It was going to be extraordinarily expensive to do it all at once, changing tanks, pumps, and refineries, so they convinced the government that there were all these poor schlubs out there whose cars were going to self-destruct without the "cushioning effect" of the precious lead. email. Login; Register; Espaol. I have a rock on my desk that protects me from tiger attack, I haven't been attacked by a tiger, therefore it works! The exhaust valve must have been stuck before I sprayed the MMO. And of course, reduce wear to a minimum. The original oil enhancer AND fuel treatment cleans the engine from the inside out, increases fuel economy, and protects against temperature extremes. Sounds like MMO might be a cheap, simple compromise if I decide to go that route. Marvel Mystery oil and Seafoam are equally excellent products. And the mogas smelled! airframe. I first experienced this in the Toyota 12R engine (I think that's the right designation, 1600cc pushrod) in a Hi-Ace. Ha ha! off season, so there was never any problem with the carb gumming up. Re: Mystery Oil Substitute? that is the real testament .. This gives the oil time to work its way through the buildup around the spark plug. Contact Us - DO NOT EMAIL CAR QUESTIONS. Let's end this nonsense before the cloudy waters become opaque, eh? 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. Now you know how it works, I will neither recommend or not The engine ran smoother and quieter, almost silent at idle. Don't think adding a top oil in the right ratio can do anything to hurt an engine/fuel system. 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. Regularly use Marvel in your oil and fuel for a smoother, quieter engine. Gunk lead substitute, yes or no? N201MKTurbo. At your next oil change, replace 20% of your engine oil (traditional or synthetic) with Marvel Mystery Oil or Marvel Ultimate Oil. When you buy through our links, we may get a commission. When Marvel Mystery oil is applied, it can dramatically slow down this process. Not documented, but everything about the vehicle leads me to believe it's accurate. It only takes a few ounces of I had to dismantle it, clean them with bleach and then reassemble it. 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. 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. gasoline ignites, it is vaporized and soaks into the carbon buildup My understanding is that valve rotators were developed to prevent lead deposits. However we are addressing two totally different problems. - It makes a beautiful molecule - the famous "benzene ring". Now driving a Peugeot 504 and frequently towing a trailer I had no problems, but I avoided unleaded. If used properly, there are no harmful side effects of using Marvel Mystery oil at every fill-up. Your donations help keep this valuable resource free and growing. Won't hurt but you don't need it. 8 years after I had rebuilt the carb I removed the cover and found this: Pretty clean after all those horror stories. 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. Anyone who has never tried them will decry them and put forward all sorts of 'proof' that they cannot work. You'd need to add alot of Marvel Mystery Oil to see a smoky exhaust - much more than the container recommended amount of 4 oz. not do their job. These fuel and oil additives are designed to clean away deposits, sludge, and fuel residues from the engine and keep it running smoothly. I have been running unleaded in the Ambassador for 230,000 miles and never had valve seat issues. that lead is added to aviation fuel to boost octane rating, and with the MY 86 CJ-7 NEEDED THE HEAD GASKET REPLACED. I do the same for the '65 Corvair, '37 Buick Roadmaster, and '88 Corvette. With an original, un-modified small block chevy engine like mine (with original heads) should I be worried about running lead additive/substitute? This cleans the carbon and sludge collected in Drive it as it is, put regular gas in it and stop worrying. 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. Then, wait for an hour or longer before attempting to remove it. 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. 1. The leading theory is to use Marvel Mystery Oil. Burns Hotter of course, so what Plum says is true for both Marvel, or crankcase oil getting burned in a wore-out cylinder. Therefore the heads are original and do not have hardened valve seats. Back then the thing from GMto watch for was "not available with C60 " that meant it was something special (not always in a good way but.) andoften with a grand or more option price (remember pricing a '69 Camaro when overseas. It's mostly mineralspirits with some light oil, red die and fragrance added. Is Marvel Mystery Oil good or bad for your car? creates great clouds of smoke, and extends engine a life for a few more spread around the valves, guides, and rings to keep things moving. Marvel mystery oil lubricates the entire fuel system-fuel pumps, fuel injectors or carburetors and the top portion of the cylinders. Tetra-Ethel Lead is not an octane booster either. Air cooled VW's loved MMO for long road trips! In a hard sealed full container (no vent), it should last a while. I can build an engine, but, I can't drain oil without a mess. Suddenly the valve seats started to wear away again. needed to go around again. 3 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory. Genesis 1:1-5, 26-31 I Corinthians 8:1-6 John 1; 8; 14 Colossians 1; 2 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. It's primary purpose is to cool the cutters. (100LL at 2.00 ml TEL) and you have the same 0.50 ml TEL that 80/87 the engine passages and crevices and hydraulic lifters, and stores it See for yourself. the fifth one says let me check and I will get back with you. Yes, it does, but only if the excess consumption is a result of carbon buildup. Petersen's STC allows for mixing of av-gas and mo-gas. However, it turned out later on that the fears were overblown. was any particular problem with lead fouling the sparkplugs, but if there The customer rating for Marvel Mystery Oil (MMO) is 4.7 out of 5 stars. MMO may improve pump gas, but there is no need for it in avgas. 2-3 ounces per 10 gallons is enough. This site sets no cookies, but the Mailchimp sign-up service '04Ram,'99Plym.Van,"96Exploder,'79Dodge pickup, '71Jav. You guys are right of course about the lead debate dating much farther back. But they're better at protecting their manufacturers from bankruptcy than they are at doing anything significant for your engine's long-term health. 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. There is not really any difference in the seat area. Just a little correction here. 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). Avgas contains lead, probably have enough lead without adding more. Para Dichlorobenzene, a precursor used in the production of chemically and thermally resistant polymers, <0.1%[2]. was also left to ponder what would have happened if I had overshot and Not to be confused with the Benzites, eh, Ms. Edmonds? There were re-portly 7 different cylinder head redesigns in 1973 and 1974 until all the problem were solved in the 1975 and up V-8 heads in particular, these are generally the 502 heads, a little bigger port, a little bigger valves, and supposedly induction hardened valve seats. there are two STCs on the market for mo-gas, EAA and Petersen. Mystery Oil is a top cylinder 1100 to 1200 RPM. engine. Marvel Mystery Oil(R) boasting an enviable reputation among vehicle owners worldwide, is truly a legend of its own. Simple. Most gas has about 10 to 15% these days.E-85 has as much as 85 % ethanol, but out west here it's more like e-40 or 50 . The rest is history. Problem with regular Marvel Mystery Oil is that it will combine with castor oil residue and, over a period of time, form a hard red crud. Its formula contains an oil-thinning ability that solves this problem. At the instant of Wether you use it right before a change, to replace a quart of oil, or just use it in the fuel tank is a matter of preference and I'm sure wont' hurt a thing used any of these ways.