imadude85: MMO is a solvent. When your engine has problems, it solves them.
Robert “Rob” S: I would have run it for a while with the marvels mystery oil before draining the old oil, not with the new oil, I would not leave it in there.
Gregory Uccello: which I will probably try my next oil change in mid July . I'll measure it out I believe it's 24oz of MMO for my car a 2005 ex civic
Gregory Uccello: I wrote MMOs manufacturer they say I can use up to 20% in oil and run the full interval which for my Honda is 6500K.
wrdmndan akdude: put it in my gas tank and add to syn. oil every change great stuff
Blackie Chong: If your car requires 5W30 use it if it requires 10W30 use it. Change oil on all regular intervals and you never have to buy this Monkey Piss. In cases of city driving I change more often and never had a noisey lifter ot tick of any kind in any car I ever owned. I always got over Two Hundred Thousand on every thing I drove and was still running great when I sold them.
MegaTabetha: A recent convert to this stuff, I find it amazing as tank additive, double dosed way way smoother pick up much better, emissions MUCH better, just 13ppm(from 40 last year) on MOT this week, economy same but runs so much better, idles better, used on 5 different petrol cars, used in 1 with noisy tappet/lifter and 95% better now, I use WYNNS engine flush and do 200-300 miles on this before oil changes at 12,000 miles on Millers NANO TECH oil, never had less than 250K miles from engines. only used in oil on 1 car so far but good effect, 1 more car to try on oil, again with noisy lifter, my own lifters in my sierra cossie have done over 300K miles and silent, did take apart at 200K and clean out though. Well worth using MMO give it a try.
Dan Skipper: Have a 35 yr old HARLEY iron head SPORSTER that would foul sparks plugs all the time . Started putting 1oz of mmo in 2.5 gal tank every fill-up and haven't fouled a spark plug in yrs , and motor is a lot quieter , great stuff
scdevon: Marvel is good stuff, but an entire quart in your crankcase is WAY too much for a maintenance dose. Yes, I know the directions say you can do it, but in my experience with the stuff, a couple of ounces along with a quality oil is all you need to keep things really clean without diluting the crankcase oil too much. Marvel is much better as a fuel system additive, but an ounce or two in the oil is a good maintenance dose to keep piston ring packs clean and hydraulic valve lifters clean. If your engine has sludge issues, an entire quart of MMO could break loose a fatal amount of sludge material in a short amount of time, too.
Deucealive75: If I wanted to clean out my engine I would use 4 quarts of 10/30 and 1 quart of cheap trans fluid.
E Lee Kaiser: Havoline is some good stuff. True sleeper oil.
Fun King Fuss: does it work with synthetic oil? that's all I use in my trucks.
Nestor Morales: how good would it be to use this on a turbo motor. i use 6 qts
David O: Why would you use 5w-30 well because of the tighter bearing clearances in todays engines. Like the LS3 in the Camaro or the LS6 in a C5 Z06 for starters. Both which require a synthetic version.
Ryan DeClue: .... Why would you use 5w30? That crap has the viscosity of WATER.
Micah autoserv.: how long do you keep this in you motor
JayzBeerz: it states to replace 1 quart per 5 so that's 1 quart of MMO and 4 quarts of oil.
re faile: Installed junk yard engine in f150 and seems to have stuck ring? Alot of pressure in oil cap. And the engine makes funny squeaking noise, Unless egt valve is disconnected. Hope this Marvels works.
Andy Almeida: My 05 Tacoma has 245k, 6 speed manual gets the carbon cleaned out regularly and still ticks like when I bought it new... MMO and Lucas additives ftw! I recommend starting with 91/93 gas, MMO lowers octane rating.
themanshere74: I might use it before an oil change and drive it 100 easy miles. I am sure it would clean very good. Does it make your engine feel like it has more power if you put it in the gas?
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