Marvel Mystery Oil, or MMO, — to the uninitiated, it may sound like a magical substance concocted from secret ingredients, and in some ways, that’s exactly what it is. However, others may see it as nothing more than a gimmick, and even question whether or not it’s safe to use in a car’s engine. MMO claims to be an effective cleaner that cleans vital components within your fuel system. It also helps to release precious extra horsepower, by cleaning stubborn carbon build-up from inside the cylinder head, crankcase, and fuel injectors. It’s impossible to highlight exactly what MMO is, apart from classifying it as a fuel and oil additive. According to the MMO website, the founder, Burt Pierce, responded to all inquiries about the product’s make-up by stating “it’s a mystery!”.
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Despite not divulging the hidden secrets of this mysterious additive, MMO are adamant that the powerful formula is not only safe for your engine, but impressively beneficial too. MMO’s claims include being able to not only clean and enhance performance, but also cure issues such as cold-start problems, and even help to combat and prevent more serious engine issues. It’s only natural that many would be dubious about such bold claims, but it’s equally true that many have tried the mystery additive, and with success too.
Here’s how and when to use Marvel Mystery Oil
You’d have to be driving something pretty unique for MMO to not have you covered, as they claim the additive is suitable for use in everything from gas-powered snow blowers and lawn mowers, through to diesel generators and jet skis. Furthermore, MMO’s own video tutorial suggests that the product is ideal for use “at every fill-up as part of regular engine maintenance”.
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There is no shortage of folk who have used the additive and experienced some success too, with numerous testimonials on the MMO website, in addition to users on Reddit, who claimed to have used the product successfully in the past to alleviate engine issues. Others have taken to the internet to state they simply don’t rate it as an oil additive, and that better options are out there. For the most part, those that have used MMO feel it has made a positive difference, usually for older, carbureted engines. It’s also worth mentioning that alternatives are available. For example, it’s also perfectly safe to use something like WD-40 for cleaning carburetors, if you don’t fancy pouring the mystery additive into your classic car.
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