What does Marvel mystery oil do?

Marvel Mystery Oil works 100%

i had a fourhweeler that would not idle and would die after 5 minutes of driving and i put this in the gas and it cleaned it out and fixed that problem never had an issue since

Well, what happened? I have this stuff on the ready, for a very tired 'diesely' engine. Assistance is GREATLY appreciated!

Did you know that Amsoil does not have official approval for Dexos 1 Gen 2 ? And lately they've switched from full synthetic to adding hydrocracking.

I've added MMO to my 69 Ford truck since 82. It's got well over a million miles on it. In 2012 I opened up the 300 ci. Straight 6 cyl. motor on top and took the oil pan off. I wanted to see if it needed an overhaul. The insides were so clean l was very surprised. It had a yellowish gold shine on all the insides. The oil pan was also very clean, not the slightest sign of sludge. I also add MMO to fuel every time l fill up. The motor still runs silky smooth and has lots of power, enough to pull a 16' trailer loaded with 2,000 + lbs. of scrap metal 40 miles away with no problem. I still have the scale weight receipts.
Since then l now add MMO to my riding mower too.

I started using MMO in my 2012 Ford Focus (manual transmission) and with the first use my fuel mileage increased significantly. In the summer, it went from 32 - 36 mpg to 36 - 41 mpg, both in mixed driving. In the winter it went from 28 - 34 mpg to 32 - 36 mpg. I am a believer. My car today has 150,000 miles on it. I started using it around 120,000 miles. I've always changed the oil on schedule, and the engine still runs like new.

Been using MMO for 20+ years. Every other oil change I'll use it as a replacement for 20% of motor oil and it has always seemed to do a great job. Even to the point when I do my 5k mile oil change the oil is still fairly new looking. I also add 4oz everytime I fill up with gas.
Both my cars are 23 years old and both run like new. 2K Corolla w/ 285,443mi
and a 2K Buick LeSabre w/188,502mi.
The Rola burns about a half quart of oil every 800 miles or so but this is a common issue with the 1ZZ engines Id be willing to bet it would burn much more if not for the MMO I use.

How many miles would be recommended to run with MMO in oil replacing 20% of oil at the begging of an OCI??? I’d say 3k is fine but maybe up to 4k

You thinned the oil with the mmo it wont hurt anything but thats why it poured faster

I have many MMO bottles in my shop, even blind person could see I'm a MMO believer, in gas & oil.

So would mannoll energy premium plus mmo be as good as magnatec 5w30 stop start can you please do that test

But what's Marvel Mystery oil's ASTM D-2783 load wear index and last non-seizure load rating? I can't find this info anywhere. The DynaLube I'm using has a rating of ASTM D-2783 load wear index (45.02) and last non-seizure load (0.42mm) 348,426 psi!

🤷🏻‍♂️

They now make a synthetic blend

Why do people use the cheapest motor oil on the market for these Test

Some people say to add MMO a few hundred miles before an oil change, but others say to add 1 quart less at an oil change and substitute with 1 quart MMO. So then they would run MMO all the time. Is there any special problem of the MMO breaking down faster than regular engine oil?

I'll bet that next pot of coffee will be delicious.

I'll bet you'd get the same results mixing vinegar with it. Aren't you just making the oil thinner so it drains faster?

Don't sound so down, have you some MMo coffee

My opinion….MMO surely would have been beneficial in old engines from yesteryear due to the loose tolerances and simplicity of the engines, but I’m doubting there is anything good that MMO could bestow upon the modern complicated engines. There are too many narrow specifications/limits that could be exceeded and result in damage. Just my opinion.

So it isn't snake oil

If you're heating it up why freeze it

I've noticed It actually works really good with the transmission

It seems to stop my KIA turbo 2.0l from consuming so much oil during each fuel up, and decreased the ticking noise in my hemi charger. It really works for some reason!

I use Lucas oil in my gas tank and marvel mystery oil in my engine oil

UNBELIEVABLE!

Thx 4 sharing .

I have direct injection motors. FB25 N/A, LTG 2.0T
I use marvel in the fuel and in the oil every other oil change and tank. It keeps the oil much much cleaner after I have done it for years. On a scope I have very little carbon on my intake valves

I added 1/3 of the bottle of marvel mystery oil to my oil and drive for 150 miles and it made a lifter stick and I thought my engine was done for.. I changed the oil and it became unstuck and runs great. I will never use mmo again for anything except in my oiler can

I have added a quart of m m o for decades in all my vehicles On my oil changes never had an engine problem that’s all I know😉🇺🇸 won’t change now .

1 quart of mmo would have thin out that 0w20 to a 0w-17

GDI develop carbon deposits. Low tension piston rings get stuck easier. MMO , it's old tech. but so is the ICE tech.

I had a used 1999 Toyota Camry years ago that I would normally fill the tank and keep track of how many miles I got out of it (usually around 300 miles per tank). After i used MMO in the fuel tank and added it in with the engine oil, I got an extra 50 miles out of the tank! This stuff is amazing!

See if MMO can clear the sludge of this guy's nose. It sounds really stuffy. 😅😅

You want oil to be thicker as the temp is colder!

Can you use this in a 2005 dodge ram 1500 4.7? In the gas? Or oil?

Is it safe for new godzilla rv motors like a 2022

I use Redex upper cylinder lubricant. Same colour, same bottle. Is it the same stuff. (In the UK)

There are 3 additives that I use in all of my vehicles oil and manual transmissions. This combination has kept my 1999 Toyota running sludge free for 280,000 miles and even my Chinese scooter has over 30,000 miles on it. My absolute favorite additive- Engine restorer, I use the recommended amount depending on applications. Small engines get a good soaking in it, I use so much engine restorer in my lawnmower the in side of the block looks Golden. XD That poor thing is older than the car. Second in line is Marvel, I substitute 8% of the oil for every oil change, and toss a few ounces into the fuel tank from time to time. , I also use a bit of Transmission fluid, usually 2% or so. This combo cleans the engines internal surfaces, protects bearings, fills in small scores, and scratches in the cylinders, rings, Valve seats and cam lobes as well as keeping seals and gaskets soft and pliable. Marvel is some wonderful stuff. Its not just for oil and fuel, It works great for Mosquito fogger, penetration lubricant, rubber conditioner and tire shine, Its good for removing tar, bugs and sticker residue from paint, and takes 10 years off of those old grey plastic bumpers too. . Im not sure what else is out there that can be used in so many ways. XP

When I was a kid Marvel Mystery oil had the same religion cult like following as Sea Foam has today. It's usually a result of good timing and high powered marketing.

Marvel will free stuck valves if you pour it through the carb of a running engine.Used car dealers have relied on in the past and it never failed.

Always trust the old timers they knew what they were doing

I love MMO!!

Can you now say now more, I don't think you say now enough now, nao

I’ve seen it used as a cleaner. Add one bottle to a oil change, run 15 minutes, then drain. It eats a lot of carbon deposits out of the engine. But I would not leave it in there more than 15 minutes

Been using mmo for 50 years. Muscle cars to now. Just use common sense. Most of you you tube experts have not been around long enough to see long term results. I have. I dont take my vehicles to shops.

Can you do one with hot shots FR4 friction eliminator

My Chrysler 2.7 L V-6 engine was burning 1 qt of oil for each 500 miles traveled. One month ago I topped up the oil reservoir with 12 oz of MMO. After 300 miles of commuting, I topped up the oil again with 12 oz of synthetic oil. After another 300 miles of commuting, the oil burning is ended. The engine is clean. The rings seal properly. I'm happy with MMO and my world's worst engine.