I do the same for the '65 Corvair, '37 Buick Roadmaster, and '88 Corvette. The Seafoam on the other hand is a bit more expensive with its selling price of $6.97 for a 16oz bottle. By TheTurtle March 3, 2018 in Vintage Mooneys (pre-J models) Share More sharing options. The following is my experience with valve seat recession. off season, so there was never any problem with the carb gumming up. And the mineral spirits burns rather cleanly. It was very popular back before detergent motor oil was invented. Honda ATF DW-1 Equivalent [Safe Alternatives To Use]. Your donations help keep this valuable resource free and growing. This in turn caused increased vehicle performance and fuel economy. Won't hurt but you don't need it. Not documented, but everything about the vehicle leads me to believe it's accurate. If screen type system, be sure to clean screen. on a high time engine; about half TBO or less should be the
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. Instead of a 'lead substitute', try Marvel mystery oil. Motorcraft Coolant Equivalent: [Orange & Premium Gold], 1987 2022 Jeep Wrangler Oil Type And Oil Capacity Guide. up to a higher RPM for a few seconds and then recheck gives a
Lead was an octane booster. However, the carrier is toluene, and
This oil helps your car start more quickly in cold temperatures and keeps it running smoothly. Just like the topic of using non-detergent oil. Think about the whole scenerio . which I adapted here with his permission. What power steering fluid is compatible with 89021184? OTC and Third Party Oil Additives Substitute for Marvel Mystery Oil 1993_VG30E_GXE Dec 12, 2009 Not open for further replies. Back in the 50's the Marvel Co. sold automatic dispensers for their product. ATF will do the same thing inside the engine at a lower cost. I have never had issues with even square port heads with valve recession and I rag the heck out of my cars and used to cruise around the desert at 120 M.P.H. Robert Parker used Marvel Mystery Oil to reduce the buildup of lead
TEL vaporized and the excess pushed out the exhaust, and this
Marvel Mystery Oil is top end lubricant , not an octane booster. I'm skeptical of anything that claims to perform equally well in the crankcase *or* gastank. EAA has an answer, after 5 different people and
All content of this site Copyright 2018 TheAMCForum unless otherwise noted, all rights reserved. Thank you. 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. The problem turned out to be one of those new condensers. So, whats the verdict? that are most common use MMT and are more like an octane booster. I think they still have a place in the modern day engine as well as the older ones. More sharing options. Also if it did help protect the valves, how would you know? Marvel Mystery Oil helps unleash maximum power and performance while extending engine life. It works, and has for a long time. "Mystery Oil", as it was originally called, proved to have other beneficial effects on the engine. Two engine overhauls, no valve grinds in between and no seat recession. Spark plugs in cars can become stuck and difficult to remove over time. If it's near spec, I recommend you just go drive the thing, enjoy it,and pretend you never heard the word "additive". Just drive it on whatever gas comes out of the pump at your local gas station. So, when it is about Marvel Mystery oil vs. Seafoam, the Marvel Mystery for around $4, Seafoam charges you double of it for the same quantity. I don't think I've seen so many responses so quickly to a post before. When valves are beginning to stick, it will
'04Ram,'99Plym.Van,"96Exploder,'79Dodge pickup, '71Jav. 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. Marvel Mystery Oil is top end lubricant , not an octane booster. not do their job. Many are getting 400k out of these truck easily. So when the pump in the tank of the wife's Voyager started to hum its death tune, I poured a pint of Marvel in the tank for dungz and giggles, figured I'd be dropping the tank soon enough anyway. Can MMO be used as a lead substitute? Go to your local race track with a 5 gallon can and buy some 110 or 120 leaded race gas from the guy that has some barrels in his pick up somewhere in the pits.. $10 - $15 per gallon. --
Gas was unleaded until compression ratios started going up in the '50s. | Daniel Ford's books
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. Posted March 3, 2018. If you ever do get severe valve seat recession, the cure is to install inserts. As a result, your oil will be unable to efficiently lubricate your engine. By When winter is over your engine will be thanking you as the life of your car continues to extend. created during WWII because the cooler cylinders on the multi-row radial
Many believe that when used correctly, it can do good things in your cars. I would also change to synthetic motor oil although, I would like to hear some experienced opinions on this. My understanding is that valve rotators were developed to prevent lead deposits. Marvel Mystery oil has been carefully designed with additional ingredients to help reduce oil consumption by preventing carbon build-up. 2/ Will Marvel Mystery Oil Reduce Oil Consumption? I have wondered what adding MMO does to your 5w-20 as well. which again left me at the far end of the runway without power. | Sail Alaska's coast
See Also: Lucas Vs Seafoam: Head-To-Head Comparison. You aren't driving your truck for racing (drag or track), pounding up steep hills day after day or abusing it in any way. It is recommended that you use Marvel Mystery oil in your fuel system every time you fill up your vehicle. The octane is in how the fuel is refined and what "CUT" it is is. After a few such experiences, the airport put
That will be $4500 please.So I put a good dose of MMO in and on the second tank the knock vanished. 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. 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. To answer I'd need to know which SBC is being discussed. Websites 1997-2019 Daniel Ford; all rights
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I hear a lot of disagreement about the need to run lead-substitute or lead additive in older engines. Unleaded was just coming in on the Australian market then and I was told it did the same. Oil does a better job of preventing galling on the lands, and chip rewelding, which I doubt you're getting into. Copyright 2023, Antique Automobile Club of America. Petersen's STC allows for mixing of av-gas and mo-gas. sodly cut-off time, for first use. It is safe for catalytic converters if used according to directions on the bottle or can. Sign in or register to get started. So in the end, Marvel Mystery oil isn't a gimmick. With an original, un-modified small block chevy engine like mine (with original heads) should I be worried about running lead additive/substitute? Then, it fortifies the oil coating, preventing rust from forming inside your engine. 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. They did not live very long. I had to dismantle it, clean them with bleach and then reassemble it. AMC engines never really have issues with valve recession as they used good materials in their heads. Our gas here is 10% ethanol. decide". 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. Pierce was best known for his invention of the "Marvel Carburetor", which became the standard automobile carburetor of its time. I think the term upper cylinder means to lubricate the moving valve stems with in the guides. It's your money. GM bought the rights to much of Pierce's work and hired him as a consultant. Benzene is an interesting little hydrocarbon. Please provide proof so we can switch to the perfected heads. [2] It is used as a fuel additive, oil additive, corrosion inhibitor, penetrating oil, and transmission leak stopper and seal relubricator. The lead does not remain in the engine, and can't build up on
Bob's article is followed by an email I received from Terry Lutz, expanding on Marvel and the alternative TCP. AMC switched to induction hardened valve seats a little later then the other manufacturers. I had to study more of it than I wanted to in chemistry (which was never my favorite subject - but who knew it would have some practical use???) on Marvel and its alternative, TCP. As a result, your car will have to work harder to generate enough power to crank the engine. 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. It's mostly mineralspirits with some light oil, red die and fragrance added. It is difficult to pick a winner amongst these two products. 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. 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. People use Marvel Mystery Airtool oil. 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. To mix with fuel, you put six ounces of additive for every 15 gallons of fuel. The amount of TEL in the higher grade fuels has increased the
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. AMC engines never really have issues with valve recession as they used good materials in their heads. Anyone who has used them knows they work and has had a good experience with them. Great stuff and recommended by a mechanic. Burns Hotter of course, so what Plum says is true for both Marvel, or crankcase oil getting burned in a wore-out cylinder. was any particular problem with lead fouling the sparkplugs, but if there
there's some xylene in there, too. 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. Don't think adding a top oil in the right ratio can do anything to hurt an engine/fuel system. Yes, lead lubricates the upper cylinder head, but just because you use unleaded fuel doesn't necessarily mean your car lacks lubrication. Both types of fuel are effective for carburetors, but they are not effective for engines. Only thing I can say about that is the oil does not seem to blackenbefore I get home like it normally does. 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. Back in 2016 I started having poor idle symptoms and stalling at stops. In a few months all those untouched seats had no problems but the one which had been cut saw the valve bury itself well into the seat, about 3mm down. The nonsense about "cushioning valves" and "preventing valve seat recession" was contrived by the oil companies in the face of the changeover to unleaded fuel. However, nowhere on their website, nor in any information I have seen, is the claim that it can replace lead substitutes. the formula for TCP and used it for years in car gas, which was also
by the five-gallon jug to use in my lawnmower, chainsaw, and snowblower. on unleaded and no additives. Slippery stuff! You don't need it, but if you trust your mechanic then there's no harm. a 32-degree limit on the Cubs. It's probably similar to an ashless oil (think 2-cycle oil). Didn't even have cloudy gasoline in the carb. cold weather (and New Hampshire can get really cold), they often stalled. Regularly adding this additive to your fuel tank can increase your cars fuel mileage, eliminate carbon deposits, clean your engine and fuel system, etc. Marvel Mystery oil and Seafoam are equally excellent products. It's primary purpose is to cool the cutters. I found at the time there is a simple fact relating to these devices. in the bottom of the oil kidney. LOL. know, so I called the 800 number on the side of the can. It not only removes carbon deposits and sludge, but also improves cold start lubrication and film strength. Period. As an oil additive, you replace up to 20 percent. about the same thing, with small changes in the recipe, so as not
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related: Seafoam vs BG 44K: Head-to-Head Comparison. Drive it as it is, put regular gas in it and stop worrying. With Marvel Mystery oil, you dont have to worry about your oil thickening at low temperatures. In a hard sealed full container (no vent), it should last a while. 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. Well, I've been using MMO for many years now, along with Rislone. 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.