Guest Posted December 30, 2002 Share Posted December 30, 2002 Does anyone know if using marvel mystery oil, mixed into gasoline, is safe on todays vehicles? I would like to use it as I do in my classic cars, but I am unsure if it will cause problems with oxygen sensors, catalytic converters, etc.I have contacted Turtle wax, the makers of this product, but have not gotten any response from them.I know there is a lot of knowledge people out there, and wonder if someone might have an answer.I have a 97 Chevy Tahoe with a 350 vortex engine. thanksTom BCA#26361 Link to comment Share on other sites More sharing options...
The Old Guy Posted December 31, 2002 Share Posted December 31, 2002 My question to you is: why do you think it is necessary??The engines of today will run 200,000 miles with proper maintenance, and the lubrication systems are so far superior to the old engines, that My personal opinion is that you would be wasting your money, and possibly fouling up a sensor or two.The older engines with open breathers and oil filters that did not filter all the oil left much to be desired, but the engineers have really done their homework. Link to comment Share on other sites More sharing options...
Guest imported_JPIndusi Posted December 31, 2002 Share Posted December 31, 2002 Let the Old Guy be your guide on this and most other questions. The Lincoln Towncars in the limousine service get 200,000 to 300,000 miles and they basically just change the oil and filter every 3,000 miles. With the oils of today and the engine lube systems you don't need anything else. That's my two cents.Joe Link to comment Share on other sites More sharing options...
GMPARTSMAN Posted December 31, 2002 Share Posted December 31, 2002 I will add another "worry factor", why take the chance on fouling up an injector nozzle or two? The risks, in my opinion outweigh the benefits in a late model engine. The various sensors, fuel delivery, and emission control devices in these late model vehicles are not cheap, why take a chance on damaging them by adding a "contaminant" to the fuel system that these devices were not designed to handle? Link to comment Share on other sites More sharing options...
Guest Posted December 31, 2002 Share Posted December 31, 2002 Thanks to those of you who answered my question. I guess the reason I felt it may benefit my system is I had a continually reoccuring check engine light comming on and off. A scan tool showed a P-1406 code, and a problem with the EGR valve pintle position circuit. Well, after finding out that a new valve was over one hundred bucks, I decided what would it hurt to pull out the old one and check it out. Lo and behold, there was a carbon build-up inside. After swabbing with various solvents, (even GM top engine cleaner), marvel mystery oil was the only thing that disolved the carbon. The valve cleaned up rather good, the pintle pin moved smoothly, and after reinstalling the valve, the check engine light stayed off.My main thought was if mystery oil was added periodically to the gas, it may help reduce carbon build-up within various components, keep things lubricated, and maybe even keep injectors clean. It was all "JUST A THOUGHT" but I'll heed everyones advice unless I here different. I appreciate all the time everyone took to clear up my question. I knew I could rely on you's. To all out there in classic car land, have a happy and healthy NEW YEAR !!!!Tom GBCA#26361 Link to comment Share on other sites More sharing options...
Guest Posted January 27, 2003 Share Posted January 27, 2003 I have used MMO several times in seized blocks with mixed results, but for use in lubrication of air tools I swear by it....plus it just smells soo good. Link to comment Share on other sites More sharing options...
Mr Buick Posted January 29, 2003 Share Posted January 29, 2003 I see the guys before me didn't answer your question <img src="http://www.aaca.org/ubbthreads/images/graemlins/tongue.gif" alt="" />, I am a service advisor for a Buick dealership, so, to answer your question anonymous man....... Marvel mystery oil WILL NOT harm your newer engine at all, in fact, it will help it, by keeping it clean and helping burn out deposits.....you found out yourself! <img src="http://www.aaca.org/ubbthreads/images/graemlins/grin.gif" alt="" /> Nearly all my mechanics use it, as do I, every other fill up! I put 4 ounces in per tank full. It will not cause damage to the injectors, sensors, converters, etc. Use it, go ahead it's good for it!! <img src="http://www.aaca.org/ubbthreads/images/graemlins/smile.gif" alt="" /> You buy it anyway,....why not put some in your newer engine??? <img src="http://www.aaca.org/ubbthreads/images/graemlins/wink.gif" alt="" /> Now,....any other questions? Have a great day and Happy Motoring! Link to comment Share on other sites More sharing options...
Guest Posted January 29, 2003 Share Posted January 29, 2003 has that guy been in my garage with tiger...?snake oil..... why go looking for trouble! Link to comment Share on other sites More sharing options...
Guest AWBE Posted January 30, 2003 Share Posted January 30, 2003 Not only does it run better----but I really like to see the perfect smoke rings my 1955-76R blows out the exhaust when I use MMO in the gasoline tank. <img src="http://www.aaca.org/ubbthreads/images/graemlins/smile.gif" alt="" /> Link to comment Share on other sites More sharing options...
Mrbuick714 Posted February 1, 2003 Share Posted February 1, 2003 I once had a breakdown of the ingredients in most of the additives on the market.I think if you were ever to sue one of these suppliers,they would prove there is nothing in them that could harm your engine.It works VERY well in the old Rolls-Royce with exposed valve mechanism Link to comment Share on other sites More sharing options...
Guest Posted February 7, 2003 Share Posted February 7, 2003 In my 25 year experience with the used car buisness, Marvel Mystery oil is by far the best product I have ever used to suppliment oil.It cleans and super lubricates like magic. I don't know what's in it.All I know is that when i put it in any car with a fresh oil & filter it REALLY seems to improve the smoothness and performance. It's good in the tank too. For a quicker roughness fix(assuming it's just gooed up) try a can or two of Berryman's chem tool in the tank. Mitch. Link to comment Share on other sites More sharing options...
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