Marvel Mystery Oil Trial

[Alex P.]

I don't know why. I'm not actually a top chemist. But I have had people dump large quantities of Lucas UCL in their tank without a problem, and have (though much less often) had people do similar things with MMO. I don't have as much faith in MMO as a powerful cleaner, but I can't see it hurting most engines unless you regularly and/or seriously overdose. Actually, I have heard of bad things happening with too much in a crankcase, but I wouldn't know. I don't put mystery anything in my engine oil.

 

[Vortec_4300]

quote:

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Originally posted by Ramblin Fever:
so my question is, should I run a bottle of techron or MMO for prevention, per say.

And would it be safe to run, considering I ran the BGK44 about 5K miles ago?

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I used BG44K consistently, every 20K miles, on a 1997 Saab 900. I also changed out the fuel filter every 30K miles as well. I never had a fuel related issue in almost 200K miles, and these cars were notorious for expensive fuel pump replacement procedures after around 100K miles. Also, my car has been to several continents and had the catalytic converter removed and replaced after spending several years in Northern Europe and the Middle East. When I returned to the States and had the catalytic converter re-installed, I couldn't pass emissions inspection in the Commonwealth of Virginia until after my Saab shop used a can of BG44K to drive out the last remaining vestiges of leaded fuel from the system.

After all of this, I still never had a fuel-related problem with this car. Was it the BG44K (which helped to lubricate the fuel pump and cleaned out the remains of gasoline bought in places like Lithuania, Saudi Arabia and Tunisia) or the filter changes, or both, or neither?

I couldn't say.

BG44K is some strong and effective stuff. The recommended application is every 7500 miles or one year. used oil analysis done on engines after an application of BG44K show higher wear metals, particularly lead, which MAY mean that the BG44K is causing some higher levels of wear if it is leaching into the oil during short duration driving trips or excessive idleing of the engine.

I think that you are fine for another 5K miles at least, after your initial dose of BG44K.

I also think that Techron is a good product, and much less expensive that BG44K.

Obviously, some folks on this particular post are having very good results from MMO, which is something that I had never considered putting in my gas tank. I think I'll have to reconsider that, and maybe this might be a fairly benign and effective way for you to treat your fuel system inexpensively as well.

You should also give some thought to having your fuel filter changed, if it is accessible and inexpensive to do so. You will be DISGUSTED by what is in that thing, even after a nominal amount of mileage on "good" gasoline.

 

[Ramblin Fever]

Did forget to add that fuel filter has been replaced 3 times in total mileage. I too am still on original fuel pump, knock on wood.

Thanks for your input!

 

[demarpaint]

I also noticed over the years that on occasion I would have the fuel gauge act weird. I guess the float was hanging up, after running MMO thru the tank the situation stopped. Maybe some junk was hanging the float up and this cleaned it up.

Frank D

 

[Ramblin Fever]

Question about this, I haven't ran a fuel cleaner for about 5-6k miles. The last one I ran was the BGK 44 which stated not to use more frequently then every 10K miles - if I recall correctly.

I don't have that can anymore and I can't remember for sure.

However, I can't really say whether or not I noticed any difference before or after using it.

That has been the ONLY fuel system cleaner ever used in 142K miles on this beast - so my question is, should I run a bottle of techron or MMO for prevention, per say.

And would it be safe to run, considering I ran the BGK44 about 5K miles ago?

One other question, should I run a cycle through "just" a few days before changing oil or is it safe to run a tank of gas/gas treatment several days/weeks before an oil change?

Reason I ask, is it takes me a good 2-3 weeks to burn through a 23 gallon tank.

 

[Vortec_4300]

I wanted to resurrect this thread, as I've just used MMO for the first time following my first "shock" dosage of Techron (34 oz. in 30 gallons of fuel) on a 4.3l V-6 in a new 2005 Silverado with 11,770 miles.

Has anyone had any updates to their MMO experiences?

My gas mileage before this treatmant was 23.2 mpg (mostly highway) and I'm curious to see if I have any increase in mpg.

 

[surfstar]

I noticed no measureable difference between no fuel additives or during a tank of techron followed by two tanks of MMO at 4oz/10gal. Engine might have been a little smoother with the additives.

I will be running MMO in my outboard as I think it has a greater potential to help there with the 2 stroke engine.

 

[Mud]

I blended MMO and FP at an even 1:1 ratio just out of curiosity. I keep track of my mileage, so I could see that that the mpg has increased slightly, but this increase has stayed consistent over the last 3 tankfuls, all of which have received the blended dose. No other changes to the car, not even tire air pressure, same route taken each day.
I add 4oz of the blend at each fill-up, approx. 15 gallons on a 20 gal capacity.

Test pig was my 95 Crown Vic PI, 115K miles, 4500 OCI's on Pennzoil High Mileage 5w30, generally very good mechanical condition.

Mileage now has averaged 23.3 to 24.1 mpg
Mileage before averaged 22.1 to 23 mpg

Anybody else tried this?

 

[BlazerLT]

I too didn't notice any real difference in economy.

It isn't intended to be a mileage increasing solution, it is a cleaner.

The results will be after you have used it.

 

[JHZR2]

Ive found that high dosing (Ive done about 2-3x the bottle reccomended) kills MPGs. Ive found that MMO makes the engne run smoother, LC makes the fuel pump quieter.

Neither make a statistically significant increase in MPG.

JMH

 

[Vortec_4300]

Truth-be-told, I am running a relatively new engine (approx. 13K miles) and this is the first fuel treatment regimen that I've run. I haven't noticed anything (smoother engine, increased mpg) and I don't know enough to know what noise is my fuel pump.

MMO is relatively inxpensive, I think, so I'll just keep an eye on this forum for any new updates, and continue to use it periodically.

 

[BlazerLT]

quote:

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Originally posted by Vortec_4300:
Truth-be-told, I am running a relatively new engine (approx. 13K miles) and this is the first fuel treatment regimen that I've run. I haven't noticed anything (smoother engine, increased mpg) and I don't know enough to know what noise is my fuel pump.

MMO is relatively inxpensive, I think, so I'll just keep an eye on this forum for any new updates, and continue to use it periodically.

---

Of course you aren't going to feel anything , you have a new engine.

I don't know why you are even using this stuff right now with such a new engine.

 

[Vortec_4300]

quote:

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Originally posted by BlazerLT:
Of course you aren't going to feel anything , you have a new engine.

I don't know why you are even using this stuff right now with such a new engine.

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Too much free time spent on BITOG?

A compulsive need to attend to vehicle maintenance?

A desire to run-up my AutoZone purchases card to five purchases over $20 each, so that I can get the free $20 gift card and buy more of the same stuff I've been buying?

Less common sense than a looter in New Orleans?

 

[JHZR2]

quote:

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Originally posted by BlazerLT:
Of course you aren't going to feel anything , you have a new engine.

I don't know why you are even using this stuff right now with such a new engine.

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I dont personally agree with the need for oil cleaners, etc in a new engine... but fuel deposits start to form (slowly) from the first drop of fuel, and the deposits can be evtremely hard and difficult to remove. Keeping clean in the fuel system from day 1 is smart. Keeping it well lubricated is also important from day 1.

JMH

 

[BlazerLT]

quote:

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Originally posted by JHZR2:

quote:

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Originally posted by BlazerLT:
Of course you aren't going to feel anything , you have a new engine.

I don't know why you are even using this stuff right now with such a new engine.

---

I dont personally agree with the need for oil cleaners, etc in a new engine... but fuel deposits start to form (slowly) from the first drop of fuel, and the deposits can be evtremely hard and difficult to remove. Keeping clean in the fuel system from day 1 is smart. Keeping it well lubricated is also important from day 1.

JMH

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But comon, 13k? That is the second oil change and you have deposits?

 

[JHZR2]

you dont necessarily have formed deposits, but each drop of gas you use contributes to molecules layering on surfaces, until it turns into a lump that we can see and is a true buildup.

Good to keep things cleaned from day 1 in the fuel system, IMO.

JMH

 

[luvs2drive]

I started using a maintenance dose of Lucas UCL at my first oil change on my new car. Prevention of deposits is the name of the game. Why is that an issue? Like has been mentioned, I'd rather keep my enigine clean from the start.

 

[dickwells]

I just turned 87,500 on my 2002 Silverado 4.3. You can see I drive a lot of highway miles but I have never used any fuel additive. I have religiously used top tier gas (Shell) and it purrs like a kitten in a creamry. Only issued have been the stupid distributor corrosion and intake manifold leaking, RW

 

[majora]

A number of the Cummins owners have been using a 3 to 1 mix of Power Service Diesel Kleen and MMo.
It appears to clean the injector tips and reduce injector knock due to the carbon buildup from low RPM driving. I use 32 oz of the mix to about 30 gal of fuel. Have been using this mix since almost day one and have almost no carbon cloud when I stand on it after about a week of town driving. So for me it works. YMMV

 

[JHZR2]

Ill follow up on what I said before... It is apparent that deposits do form...

At 13k, or 130k even, there is no indication to me that automatically there will be problems.

Our toyota previa has 196k, never had an additive, aqnd the fuel economy and emissions (NJ dyno test) is as good as day 1.

so many cars wexist with hundreds of thousands of miles without problems, just from using good gas, that even though deposits can and do form I am not convinced that they always cause problems.

But those who are interested in keeping their cars perfect, ought not accept any formations.

For me, the use of additives is for lubricity of the fuel systems. Ive never seen a statistically significant MPG increase, even in out multiple cars with well over 150k.

JMH