Use marvel mystery oil now!

[matthewcosta]

One line in the crankcase isn't going to hurt anything once per oil change before and after, as long as you don't put any more than that in there, if anything it'll help supplement the oil. I also do the same with seafoam top engine cleaner to clean the throttle body and upper intakes each oil change and change the oil and air filter as well. And occasionally I'll throw premium in the tank and never let it get below half. I always have older higher mileage cars, so I try to baby them as much as possible to make them last. My 2001 Grand Am SE had over 300k miles on it and still running strong when I sold it because of the rusted rockers.

[lonniebeal]

Been a fan of MMO in both for a few years now.

[franknew]

I have been using Marvel Mystery Oil in my car, truck, and lawn mower's gas tanks at every fill up since 2016. Everything is running better and smoother. My car now gets at least 1.5 to 2 more miles per gallon on the highway. I use the recommended amount of 4 ounces of MMO for every 10 gallons of gas.


Several years ago, my 2002 Chevy truck had a loud lifter ticking noise. The oil was a quart low, so I added a quart of MMO to the crankcase. Soon the lifter ticking noise disappeared. I drove the truck about 400 miles with the MMO in it and then changed the oil. The oil was extremely dirty, and this was telling me that the MMO was removing some of the sludge out of the engine.

I started using MMO in 2016 from the advice of the mechanic who had just replaced the fuel pump in my truck. He said that if I put some MMO in the gas tank, it would lubricate the new fuel pump and it would last longer. He also said that it would keep the entire fuel system clean.

[markdrake]

I've used this stuff for over 30 yrs. It does work well when used per directions...

[bdo]

Nothing to lube in the fuel pump, best thing to do is don't run gas to low the cool fuel cools the pump.

[realbhopwood]

Putting in the tank before and after oil changes, makes the engine engine run so much smoother and quieter. I recommend this.

[.lexus]

Good stuff for vehicles in engine and petrol tank with over 75, 000 miles especially in the winter. Like the man said follow the directions don't over due it.

[pepperonipounder]

Motorkote is the best crankcase additive I've found thus far. I also use Marvel or Lucas in the tank

[grabbag]

I like to use it in a vinaigrette over salads, keeps my valves clean n lubed

[jakeclauson]

I used mystery oil with my oil changes in my 4.0 jeep every few oil changes and it ran like a top to 300k miles. Probly would have run another 100k if I didn't get hit and totaled.

[JonO]

If you have an old car that hasn't had an oil change in a while or didn't have them very often, I like to add some to the crankcase and run the engine for about 30 minutes before doing an oil change. I don't add any to the new oil though.

[Namedeeznuts]

I love the stuff 🤷🏻‍♂️ people cry snake oil but it’s worked multiple times for many different things and I will use it if I have it!

[marionake]

two cycle oil works better and doesn't trip codes . Use low ash oil at 200:1 .

[christophergoodwin-qotg]

I'm running gas out of a plastic fuel can for my intentional scout 80, it rained hard and I got a ton of water in the fuel, probably 10% or more so i added some marvel and i cant believe how smooth it runs now, it's all kind a steamy but I don't care

[jesseg]

Can i use this on my 83 454 gas carburetored motor ?

[keithevans]

if you wouldnt use Quaker State oil, you would be a whole lot better off!

[jgrizz]

It should go in the oil. Not in the gas. This isn't 1940

[mitchellandrew]

Its designed for lazy ppl.
You have zero proof also. You dont build motors.