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#3387888 - 06/03/14 01:45 PM Re: Scotty Kilmer: Don't use MMO! [Re: 01_celica_gt]
tinmanSC Offline


Registered: 09/07/10
Posts: 1922
Loc: Oswego, IL
Originally Posted By: 01_celica_gt
Originally Posted By: exranger06
Originally Posted By: zzyzzx
What's MMO?

Marvel Mystery Oil

dang i just watched the new xmen, they really are everywhere...

crackmeup
_________________________
Cost of Hobby=2L
(Where L=Cost of Lubricant)
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#3387892 - 06/03/14 01:53 PM Re: Scotty Kilmer: Don't use MMO! [Re: MileHigh18]
JR Offline


Registered: 08/08/04
Posts: 923
Loc: Michigan born but my heart bel...
LOL. i have been using it for a decade or better, never have had a problem.
i buy it buy the gallon.

ken

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#3387893 - 06/03/14 01:54 PM Re: Scotty Kilmer: Don't use MMO! [Re: Donald]
Trajan Offline


Registered: 07/16/05
Posts: 3314
Loc: SE PA
Originally Posted By: Donald
Unsure if it will ruin the cat, but its snake oil for sure!


Certainly, as said in another thread, there is no concrete proof it does anything.
_________________________

Lack of harm does not mean proof of benefit.

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#3387894 - 06/03/14 01:55 PM Re: Scotty Kilmer: Don't use MMO! [Re: JR]
Trajan Offline


Registered: 07/16/05
Posts: 3314
Loc: SE PA
Originally Posted By: JR
LOL. i have been using it for a decade or better, never have had a problem.
ken


Lack of harm does not equal proof of benefit.

Cars have also been driven for decades without using it and run just fine.


Edited by Trajan (06/03/14 01:57 PM)
_________________________

Lack of harm does not mean proof of benefit.

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#3387899 - 06/03/14 02:04 PM Re: Scotty Kilmer: Don't use MMO! [Re: Trajan]
Trav Offline


Registered: 11/20/06
Posts: 9758
Loc: MA, Mittelfranken.de
Originally Posted By: Trajan
Originally Posted By: JR
LOL. i have been using it for a decade or better, never have had a problem.
ken


Lack of harm does not equal proof of benefit.

You mean like that snake oil that gave you more MPG at idle. LOL
_________________________
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#3387911 - 06/03/14 02:28 PM Re: Scotty Kilmer: Don't use MMO! [Re: MileHigh18]
Vikas Online   content


Registered: 07/22/05
Posts: 8137
Loc: NorthEast
We are talking about Scotty here; if catalytic converter gets bad, he already has a remedy to fix it :-)

Actually his remedy has worked for quite a few folks.

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#3387915 - 06/03/14 02:36 PM Re: Scotty Kilmer: Don't use MMO! [Re: MileHigh18]
SrDriver Offline


Registered: 12/09/06
Posts: 2448
Loc: Southeast Alabama
Wife and I have been using it at the rate of around 4 oz per 10 gallons of gasoline at every fill starting when the first tank of gas is added onward with no issues or catalytic converter problems for many years and in many vehicles.

it has been used in piston driven aircraft engines for years and years too.

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#3387929 - 06/03/14 03:07 PM Re: Scotty Kilmer: Don't use MMO! [Re: MileHigh18]
440Magnum Offline


Registered: 02/01/09
Posts: 6291
Loc: Texas
MMO certainly has its uses. I use it to preserve carburetors during storage, and have often dumped it down the carb of a running engine just prior to shutdown to coat the intake and cylinders for long-term storage. I can believe its a safe solvent for slow engine de-gunking.

But why, please tell me why, would anyone put an octane-reducer in fuel on a routine basis??? Light oils of any sort SIGNIFICANTLY suppress octane. As discussed on another thread here very recently, distillates like kersone and diesel have octane ratings in the ~40 range, compared to 87 for unleaded gasoline. MMO petroleum distillate content is certainly similar, and in any concentration that could have a lubricating effect it WILL also reduce the octane rating of the fuel appreciably.
_________________________
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'08 Ram 1500 4.7/545RFE
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#3387930 - 06/03/14 03:08 PM Re: Scotty Kilmer: Don't use MMO! [Re: MileHigh18]
dave5358 Offline


Registered: 04/25/13
Posts: 636
Loc: North Bend
Originally Posted By: MileHigh18
I usually watch Scotty Kilmer on YouTube, and noticed he commented that you shouldn't use MMO in a modern car because it ruins the catalytic converter. Is there any truth to this?

If you check the FAQ on the MMO Website it says:

Q: Will MMO cause any damage to oxygen sensors, fuel sensors or catalytic converters?

A: No. MMO has undergone rigorous testing to ensure the safety of all internal components in your vehicle including highly-sensitive oxygen sensors, fuel sensors and catalytic converters.

Catalytic converters are expensive to replace, so they probably did test in this area.

The most likely 'harm' would be a P0420 CEL code - low catalytic converter efficiency. The problem with P0420 codes (and the whole rear oxygen sensor thing) is that many car companies include the rear oxygen sensor simply to comply with OBDII. They don't use it for anything. If anything burps in the catalytic converter, you might get a P0420 code. It might be something serious but more likely just the quirk of how your ECU is programmed.
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2008 Corolla LE

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#3387931 - 06/03/14 03:09 PM Re: Scotty Kilmer: Don't use MMO! [Re: Donald]
dave5358 Offline


Registered: 04/25/13
Posts: 636
Loc: North Bend
Originally Posted By: Donald
Unsure if it will ruin the cat, but its snake oil for sure!

Have you ever used it? As an oil or fuel additive? Results?
_________________________
2006 Forester XT
2008 Corolla LE

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#3387935 - 06/03/14 03:16 PM Re: Scotty Kilmer: Don't use MMO! [Re: 440Magnum]
dave5358 Offline


Registered: 04/25/13
Posts: 636
Loc: North Bend
Originally Posted By: 440Magnum
If you use it in the oil- no problem.

Except that this was a fuel additive question.

Originally Posted By: 440Magnum
If you put it in fuel, it does a number of questionable things, such as put a heavier unburned HC load on the catalyst, CAUSE carbon build-up on exhaust valves, lower effective octane, etc.

Where do you get this? Have you ever tried it as a fuel additive?

From first hand experience, it reduces carbon build-up on valves - pretty effective in that department. Both your 66 Polara and 69 Coronet might like it.
_________________________
2006 Forester XT
2008 Corolla LE

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#3387945 - 06/03/14 03:38 PM Re: Scotty Kilmer: Don't use MMO! [Re: 440Magnum]
Miller88 Offline


Registered: 04/09/08
Posts: 6584
Loc: Onondaga County
Originally Posted By: 440Magnum
MMO certainly has its uses. I use it to preserve carburetors during storage, and have often dumped it down the carb of a running engine just prior to shutdown to coat the intake and cylinders for long-term storage. I can believe its a safe solvent for slow engine de-gunking.

But why, please tell me why, would anyone put an octane-reducer in fuel on a routine basis??? Light oils of any sort SIGNIFICANTLY suppress octane. As discussed on another thread here very recently, distillates like kersone and diesel have octane ratings in the ~40 range, compared to 87 for unleaded gasoline. MMO petroleum distillate content is certainly similar, and in any concentration that could have a lubricating effect it WILL also reduce the octane rating of the fuel appreciably.


It's a handy lightweight oil for when I don't want to deal with the smell of ATF (cat pee smell) or use waste oil for something.

I have used it for:
- Removing plastidip
- Putting some in a carb and spark plug well
- Light lubrication
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#3387951 - 06/03/14 03:52 PM Re: Scotty Kilmer: Don't use MMO! [Re: Trajan]
antiqueshell Offline


Registered: 03/02/12
Posts: 4152
Loc: chicago, Illinois
Originally Posted By: Trajan
Originally Posted By: JR
LOL. i have been using it for a decade or better, never have had a problem.
ken


Lack of harm does not equal proof of benefit.

Cars have also been driven for decades without using it and run just fine.


Exactly, I have YET to see any testing from MMO with a certified independent lab test that indicates it does ANYTHING beneficial for a modern motor vehicle.

I challenge MMO to provide us with any SAE certified independent lab results that show any benefits... "crickets chirping..." crackmeup


Edited by antiqueshell (06/03/14 03:53 PM)

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#3387952 - 06/03/14 03:52 PM Re: Scotty Kilmer: Don't use MMO! [Re: MileHigh18]
ironman_gq Offline


Registered: 04/30/14
Posts: 130
Loc: MN
Not a bad cutting oil for aluminum either. Great for squeaky hinges. And it smells good. I'll use better products for cleaning my fuel system but I don't see a problem using it to "fog" an engine for storage or keep a carb from gumming up over the winter.

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#3387958 - 06/03/14 04:03 PM Re: Scotty Kilmer: Don't use MMO! [Re: antiqueshell]
Trajan Offline


Registered: 07/16/05
Posts: 3314
Loc: SE PA
Originally Posted By: antiqueshell
Originally Posted By: Trajan
Originally Posted By: JR
LOL. i have been using it for a decade or better, never have had a problem.
ken


Lack of harm does not equal proof of benefit.

Cars have also been driven for decades without using it and run just fine.


Exactly, I have YET to see any testing from MMO with a certified independent lab test that indicates it does ANYTHING beneficial for a modern motor vehicle.

I challenge MMO to provide us with any SAE certified independent lab results that show any benefits... "crickets chirping..." crackmeup


Uh oh.... You made the list by agreeing with me smile
_________________________

Lack of harm does not mean proof of benefit.

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