Marvel Mystery Oil fixed my compression and misfire issue

[SubieRubyRoo]

Well, then it is what it is. I don’t have to reinforce anything. I’m not here to debate, I’m here to share my story whether people want to believe it or not. That’s up to the readers, not me.

My truck is fixed thanks to MMO, and I’m happy about it. That’s all that matters to me.

Every story is fiction until there’s verifiable facts to prove that it’s real. You’ve taken a bunch of uncorrelated data points, mixed them up, and jumped to a conclusion without any way to identify or isolate the numerous variables OR repeat the issue and treatment again to validate the results.

Here are some facts:
1. M1 FS 0w40 has some of the most robust certifications available today. MMO doesn’t have any.
2. M1 FS 0w40 is formulated with chemicals proven to clean. MMO is not.

Cool story, though. Merry Christmas

 

[Faawrenchbndr]

Another poster noted similar results with Type F, I wonder if there is a difference or it's just that you're using ATF?

Type F essentially is the same thing as Dexron, but it has no friction modifiers. With that being said, it’s a better detergent. It also works very well for a cutting oil.

 

[Faawrenchbndr]

Sounds like you would have gotten nearly the same results with some clean oil more often, then.

Engine oil is a good lubricant, however, it’s not a very good solvent or cleaner. Certainly nowhere near the solvent capability of transmission fluid or marvel mystery oil.

 

[Brons2]

You should try that Valvoline Restore and Protect next time you have low compression, claims to remove 100% of piston deposits! I kid you not! https://www.valvolineglobal.com/en/restore-and-protect/

(or maybe - piston deposits are what you want to fill in the excessive piston to bore clearance? eh I dunno...)

 

[PontiacHO]

Another poster noted similar results with Type F, I wonder if there is a difference or it's just that you're using ATF?

Don’t know really and my experience was 30+ years ago. Not sure which fluid has the most detergent…

 

[PontiacHO]

Sounds like you would have gotten nearly the same results with some clean oil more often, then.

Not in this case. The truck (302 Ford) was already 25 years old. Low miles and short trips.

 

[Astro14]

Type F essentially is the same thing as Dexron, but it has no friction modifiers. With that being said, it’s a better detergent. It also works very well for a cutting oil.

Really? How are either of them actually detergents? What do they have in them, that would make them so?

Please don’t give me the typical “Have you ever seen a dirty transmission?” Transmissions, by their nature, are sealed, and do not have combustion byproducts.…you won’t find a dirty transmission.

There was once a time, when transmission fluid contained actual whale oil, which is high in esters, and esters do some cleaning.

But whale oil hasn’t been an ingredient in transmission fluid for about 60 years.

The myth persists…

 

[Faawrenchbndr]

Really? How are either of them actually detergents? What do they have in them, that would make them so?

Please don’t give me the typical “Have you ever seen a dirty transmission?” Transmissions, by their nature, are sealed, and do not have combustion byproducts.…you won’t find a dirty transmission.

There was once a time, when transmission fluid contained actual whale oil, which is high and esters, and esters do some cleaning.

But whale oil hasn’t been an ingredient in transmission fluid for about 60 years.

The myth persists…

I have no idea what’s in them. I just know what works. I’ve used transmission fluid to clean parts. I’ve worked with aircraft hydraulics for almost 40 years.

Quitting reading the Internet BS and get your hands dirty with some transmission fluid. Go to Napa you can find type F there still, dextran doesn’t do much good but the stuff on a greasy part agitated a bit with a brush you’ll see what I’m talking about.

 

[PontiacHO]

I overhauled a lot of GM transmissions that were gummy dirty inside. No there’s not combustion related deposits but the bushing, clutch, and torque converter wear is there.

 

[Astro14]

I have no idea what’s in them. I just know what works. I’ve used transmission fluid to clean parts. I’ve worked with aircraft hydraulics for almost 40 years.

Quitting reading the Internet BS and get your hands dirty with some transmission fluid. Go to Napa you can find type F there still, dextran doesn’t do much good but the stuff on a greasy part agitated a bit with a brush you’ll see what I’m talking about.

I see, so you think I’m a keyboard warrior? No actual experience working on cars?

It’s quite clear you have no idea what is in the fluid, because there is no magic to transmission fluid. In fact, it has considerably less detergent than engine oil.

While I do read some things on the Internet, my understanding of transmission fluid chemistry comes from talking to people that actually manufacture transmission fluid. They will tell you; the fluid itself is nothing special.

You are the one spouting Internet myth BS about the magical properties of transmission fluid. Your attribution of success is no different than my magic stick. You presume causality, where there is only correlation.

 

[Faawrenchbndr]

I see, so you think I’m a keyboard warrior? No actual experience working on cars?

It’s quite clear you have no idea what is in the fluid, because there is no magic to transmission fluid. In fact, it has considerably less detergent than engine oil.

While I do read some things on the Internet, my understanding of transmission fluid chemistry comes from talking to people that actually manufacture transmission fluid. They will tell you; the fluid itself is nothing special.

You are the one spouting Internet myth BS about the magical properties of transmission fluid. Your attribution of success is no different than my magic stick. You presume causality, where there is only correlation.

You are welcome to believe whatever you like. I will stick with what I know and what I have personally experienced.

 

[demarpaint]

This thread did exactly what I figured it would do. Here's the rub, you get a car that has a ticking lifter, fresh oil and a new filter didn't resolve the issue, and hadn't done so for several oil changes. Maybe for even for years. Then someone suggests changing the oil and adding a bottle of product XYZ, the lifter noise is silenced after a few hundred miles, and stays silenced. Then if visual inspection down the oil fill hole and cutting open the filter showed evidence of cleaning we'd have a winner. If and only if product XYZ had a name that didn't contain the word Marvel or Mystery in it. I had some great results with it over the years, and no it wasn't in my head. Merry Christmas Bitog!

 

[cptbarkey]

This thread did exactly what I figured it would do. Here's the rub, you get a car that has a ticking lifter, fresh oil and a new filter didn't resolve the issue, and hadn't done so for several oil changes. Maybe for even for years. Then someone suggests changing the oil and adding a bottle of product XYZ, the lifter noise is silenced after a few hundred miles, and stays silenced. Then if visual inspection down the oil fill hole and cutting open the filter showed evidence of cleaning we'd have a winner. If and only if product XYZ had a name that didn't contain the word Marvel in it. I had some great results with it over the years, and no it wasn't in my head. Merry Christmas Bitog!

The devil is in the details. His original and ongoing complaint sounds electrical in nature. 22 years of corrosion will have you chasing your tail until a magical elixir distracts and wastes time.

 

[Brons2]

While I do read some things on the Internet, my understanding of transmission fluid chemistry comes from talking to people that actually manufacture transmission fluid. They will tell you; the fluid itself is nothing special.

Maybe fresh 0w16 would do about the same cleaning parts as Type F. It's about the same viscosity. It wouldn't be cost effective though.

 

[demarpaint]

The devil is in the details. His original and ongoing complaint sounds electrical in nature. Corrosion will have you chasing your tail until a magical elixir distracts and wastes time.

For sure! Just like with anything else, you need the right tool for the job. You're not going to fix an electrical issue with an engine cleaner that's for sure. I was just addressing the typical negative commentary. It's cold out today, and I have some time to kill.

 

[nicholas]

I have a 2001 Chevy Blazer with the 4.3 Vortec. It only has 107k miles. I bought it with 103,300 ish miles.

So about 2 months ago, random misfires started occurring. I've been having random misfire issues on cylinder 1,2,3, and 4 for about two months. These cylinders are the two front cylinders, and the middle cylinders on each bank.

The engine was running rough enough for me to realize that my engine was misfiring. About once a week, I would get a P0300. The P0300 was always pending, but once a week, the counts would rack up and cause the engine light to come on.



About 6 months ago, I’ve replaced the spider injectors, and the lower intake gaskets, so I knew these weren’t causing the misfires. I also always run a bottle of Techron about once a month, so I knew the fuel injectors were clean enough.

So I checked the distributor, spark plugs, wires, ignition coils, ICM, and the vaccum. Camshaft retard was also at 0 degrees. Everything was in great shape and was working properly, verified by my scan tool and the tests I performed. When I took the distributor out, the lifter valley was pretty brown looking, little bits of sludge on the inside. But the distributor gear didn’t have that much wear on them. Rotor and cap was also clean. I also took off the valve covers to actually look at the rockers to make sure they were opening and closing all the way, and they were.

So I decided to do a compression test. And the compression on cylinder 1,2,3 and 4 was lower than the rest. Number 1 was the lowest of them all, reading at 105psi. I got worried, because I was thinking maybe somebody swapped a junkyard Vortec before I bought it.

I had a bottle of marvel mystery oil laying around in the garage, so I added some to the crank case. I drove with it in my engine for about 3 days, and the misfires disappeared. The engine started smoothing out the more I drove it. The misfire counters are reading zero now, and the history counts are also zero.

I just checked the compression again yesterday, and the compression was all pretty much equal across all cylinders, nice and high in the 145-155psi range. I took the distributor out again, and the lifter valley was noticeably cleaner, still brown, but the bits of sludge was all gone.

The crazy thing is I’ve been using Mobil 1 0w40 Euro oil this whole year, and I’ve been changing the oil every 3 months. What’s up with that BITOG?


So, the moral of the story is, MMO does work.
I don’t know how well it works as a fuel system cleaner, but it sure did work very well in the crank case for me.

Anybody that has low compression, and a dirty engine, use some MMO. It works very very well. I don’t think it’s snake oil

Do you do lots of short trip driving?
If so - its very hard on your engine and oil - much more frequent oil changes are necessary to keep things clean.

 

[nicholas]

I would like to know as well.

It is cleaning piston rings - - - plain and simple>

 

[nicholas]

I overhauled a lot of GM transmissions that were gummy dirty inside. No there’s not combustion related deposits but the bushing, clutch, and torque converter wear is there.

Not to mention lots of heat - - - - high heat + old fluid = varnish

 

[panthermike]

This thread did exactly what I figured it would do. Here's the rub, you get a car that has a ticking lifter, fresh oil and a new filter didn't resolve the issue, and hadn't done so for several oil changes. Maybe for even for years. Then someone suggests changing the oil and adding a bottle of product XYZ, the lifter noise is silenced after a few hundred miles, and stays silenced. Then if visual inspection down the oil fill hole and cutting open the filter showed evidence of cleaning we'd have a winner. If and only if product XYZ had a name that didn't contain the word Marvel or Mystery in it. I had some great results with it over the years, and no it wasn't in my head. Merry Christmas Bitog!

100 percent, these threads tend to go awry. Also the idea of electrical is a good one, but I don't recall OP mentioning anything about fixing an electrical issue at the same time.

 

[MolaKule]

I have no idea what’s in them. I just know what works. I’ve used transmission fluid to clean parts. I’ve worked with aircraft hydraulics for almost 40 years.

Quitting reading the Internet BS and get your hands dirty with some transmission fluid. Go to Napa you can find type F there still, dextran doesn’t do much good but the stuff on a greasy part agitated a bit with a brush you’ll see what I’m talking about.

If the Type F had such good solvency, you would not need a brush.

Any ATF simply thins hydrocarbons such as deposits or engine oils.

ATF's have very low levels of detergents and dispersants and as such are very poor solvents.

Engine oils have much higher levels of detergents and dispersants than do ATFs.