MMO in every fill up?

[mechtech2]

MMO in the fuel was even more useful when we had leaded fuel. It combated the lead build up very well. This is why many use it in light aircraft today. [they use lead]
There is some fuel pump lubing with MMO, as wll as valve guides and cylinder/rings.
It will help clean and keep clean valves. combustion chambers, and the fuel system.
Also a bit of sealing improvement on valves and rings is likely..
Not the best lube, as 2 stroke oil is far better [and dirtier]. And not the best cleaner either, as dedicated modern in tank cleaners are better. But MMO is great for the price.

 

[mongo161]

TC-W3 is ash-less and is not like regular 2 stoke engine oil. You will have no dirt from the TC-W3 since it burns clean.

I use 3 ounces of TC-W3 and 3 ounces of Chevron Techron or Gumout/Regane, non concentrate, Fuel System Cleaner to each fill up of 15 gallons of regular unleaded fuel. Works fine for me.

 

[cancov]

Originally Posted By: ahoier
3 oz. sounds just about right....I typically add 2-3 oz. per fill up with my 88 Aries....it has a ~14 gallon tank, and my typical fillup is ~10 gallons....

I'm almost at the end of my 2nd tank at 3oz per tank. My tank capacity is 13.2 gallons, but typically fill up with 10-11 gallons. I was going to run 3oz per tank for (3) tanks and then tweek my MMO volume. Right now, my MMO concentration is approximately 45% lower than the 4oz/10gal recommendation, so I have a little room to work with. My calculations are that I can go up to ~5.3oz per tank. I hardly doubt I'll increase to maximum concentration, but may flirt with 3.5, 4.0 and 4.5oz per tank.

And hey, after these runs, I'm thinking of trying TC-W3 at 1oz per 5 gallons. It's kind of wierd that I look forward to going to the pump. Not necessarily the pay out, but the data.

 

[MrRPM]

Originally Posted By: cancov
I'm thinking of trying TC-W3 at 1oz per 5 gallons. It's kind of wierd that I look forward to going to the pump. Not necessarily the pay out, but the data.


Im the same way, haha I use TC-W3 and im still playing with it. fun fun haha

 

[mrdctaylor]

Originally Posted By: mrdctaylor
I just tried it in my 2002 Toyota Tacoma at the last fill-up for the first time after reading about people getting better fuel economy. I used the 4oz/10 gal fuel recommended dosage. My fuel economy went from around 19mpg to 16.5mpg. Hmmmmm. I am going to run it through one more time and see if it stays low. Then I'll quit using it for a few fill-ups and see if mpg goes back up. We shall see.


I just got 17mpg at my last fill-up after using MMO for a second time (at the recommended 4oz/10gal ratio. I filled up with no MMO this time and I'll see what my mpg's look like and report back.

 

[KCJeep]

Originally Posted By: mrdctaylor
Originally Posted By: mrdctaylor
I just tried it in my 2002 Toyota Tacoma at the last fill-up for the first time after reading about people getting better fuel economy. I used the 4oz/10 gal fuel recommended dosage. My fuel economy went from around 19mpg to 16.5mpg. Hmmmmm. I am going to run it through one more time and see if it stays low. Then I'll quit using it for a few fill-ups and see if mpg goes back up. We shall see.


I just got 17mpg at my last fill-up after using MMO for a second time (at the recommended 4oz/10gal ratio. I filled up with no MMO this time and I'll see what my mpg's look like and report back.


In my Jeep, MMO seems to build up over 2-3 tanks to maximum benefit, and my first tank without it will drop, but my second or third without it plummets even further. That said it hasn't had drop of gas without MMO in it for months, it works that well for me in that vehicle. I have others that don't care too... you need to try it in each vehicle to see if there's any benefit.

 

[AMC]

Originally Posted By: MrRPM
Originally Posted By: cancov
I'm thinking of trying TC-W3 at 1oz per 5 gallons. It's kind of wierd that I look forward to going to the pump. Not necessarily the pay out, but the data.


Im the same way, haha I use TC-W3 and im still playing with it. fun fun haha


Me too! It has been over a year of use now and I have only positives to report here. I happen disagree with the others here that say TC-W3 is not a cleaner though. Also, most do seem to agree TC-W3 restores power and smooth idle similarly or slightly better than MMO, while being cheaper to buy and use.

 

[lexus114]

I just wonder how, if any, it affects the cat.converters?

 

[demarpaint]

Originally Posted By: lexus114
I just wonder how, if any, it affects the cat.converters?


I've said this before. In all the years I've been using it, via an Inverse Oiler or added to the gas just about every fill up, I've yet to replace a CC. My Aerostar has 206K miles on it with the original CC and O2 Sensor. About 156,000 miles of that was with MMO or TCW3 in the gas. My 88 E-150 has been feed MMO via an Inverse Oiler since new. I removed the oiler a while back and have been adding it to the gas, no CC problems with that either. I don't think the small amount, at the recommended dose of 400:1, will harm anything. I'd be willing to bet it has been tested. I know for a fact its been in use for over 8 decades, and many of those vehicles had/have CC's. JMO

 

[fdcg27]

Originally Posted By: 91344George
Originally Posted By: Jimmy9190

Rant is over. No dealer will waste his time trying to identify MMO use in a fuel tank or oil sump. MMO is a good product, OP and anyone else can try it and see how it works in their vehicle.


The dealer might not ...BUT the manufacturer might..and in the end if you are found to have VIOLATED the terms of the warranty you might be DENIED coverage. This happens, more than you think, I've worked at many different dealers and THEY DO test for this if the cost of the repair is large. Don't be surprised . You've been warned.

Hey, if your warranty coverage is done, go right ahead, but if you are relying on that warranty, think twice.


I think you're being SILLY.
Using MMO at the RECOMMENDED rate would yield nothing suspicious in a fuel sample.
Now, if you were dumb enough to give the regional rep an out by admitting that you used an additive, it would be a different story.
There is nothing in MMO in the concentrations being used that COULDN"T appear in pump fuel.
I added the caps to certain words because you seem to LIKE it.

 

[inghamc]

My wife's '02 Grand Caravan developed a high pitched squeal from the rear. It was so high that my parents couldn't hear it. Mechanic said it was the fuel pump likely getting ready to fail.

I started the recommended MMO dose in the tank and the fuel pump noise went away. I always new when I forgot to add the MMO because half way through the tank, the squeal was back.

MMO absolutely quieted the fuel pump. I never heard it when I had MMO in the tank. I always heard it when I had forgotten to add it.

Chris I.

 

[Dupree]

and on that note i'll share my .02. I have used MMO for years also never had a cat fail and for that matter haven't replaced a fuel pump ever........My last commuter had 360,000 89 ford escort still has the factory fuel pump, in fact when the cam went south i sold it to a guy who put a new cam in her and is still driving her to this day, lol wonder how many miles she is at now or if he has had to change the fuel pump yet...

 

[Scorch]

Started my MMO regimen around March of last year, bought a bottle of stabil and use that bottle with a great big MMO sticker slapped on it to measure out 6oz with each 16 gallon fill up which I have found works best. Currently 2 gallons have gone through the fuel system with nothing but positive results. Can't really say whether I'm getting better mileage, but I do know I can feel a difference in the idle and responsiveness in the car whether it has been added or not.

 

[Sixxer]

I have a verdict! So there are many many variables and what not, but I am a believer. I ran BG44k for one tank, and the tanks after I have run 4-6oz of MMO. I used Chevron gas for both tanks, I just filled up today and I am changing the tune on my car to 93octane and its shell. Here are the results

Tank 1- 12.7 Gallons Mileage 257 20.23MPG
Tank 2- 13.5 Gallons Mileage 280 Almost 21MPG!
Car is a 2008 mustang v6 automatic with many mods. All recent tanks have averaged as low as high 17's to high 18's. I will continue with the MMO and see what I get. Obviously changing the tune and octane might skew future results, but I've run these tunes with 93 previously with the same MPG's as 87(More performance though)

 

[CharBaby]

I'm kinda on the fence with the use of MMO in EFI engines. Here's why:

Using MMO in my wifes '01 Lexus RX-300 at the recomended doseage(4oz/10gal) or in this case, 8 oz/ 20 gal fuel, the CEL(A/F sensors, B1S1/B2S1) has come on every time. Even trying MMO again after all sensors had been replaced over time as the A/F and O2 sensors needed replacing from age alone. This engine throws a code(same codes as with MMO), even when using FSC's such as Regane or Techron if they're too strong(recomended doseage). This engine/ECM, just doesn't like anything in the gas tank except gas! I don't know if others with the same vehicle have the same issue!

In the Lexus, using less doseage @ ~ 6 oz/ 20 gal fuel, it seems, Ahhh OK but, I have yet to notice any benefits in anything EFI including my '04 Altima 2.5S, wheather it's MPG related or smoother/quieter engine idle or high rev/WOT performance or fuel pump operation smoothness/quietness.

And using too little MMO(e.g. 2oz/10gals) may in fact just be waste, as it's probably not doing a thing, where I can use the MMO where it does work well as in my carb'd engines!

And also, I have tried different doseages in each car over the last 10 years. It seems best to just leave well enough alone!

The Altima doesn't throw any codes at the recomended doseage of MMO and it too has the same size gas tank(both cars, 20 gals). And I don't notice any benefits here either. I will do a maintenance dose of Techron or Regane now and again.

I have not tried the MMO in my daughters '06 Mazda3 2.0L as this engine does run well,(as do the others) and I don't want to mess with success.
______________________________________________________________________________________________________

Where I do notice the benefits is in small engine lawn/snow equipment and carb'd engines such as my '80 Firebird FORMULA V8(also a 20 gal gas tank).

In fact, in the Firebird V8, the idle, throttle responce and cruising on the highway is much better and the whole engine runs better than it ever has in the past. I've been using MMO in this engine for about 4-5 years now and I have owned the car since new(32 years). I have been uisng Sta-Bil in the car for many years as I never know when I going to take the car out of the garage for a run during the summer months

The past 4-5 years I have been using MMO/Sta-Bil mix. Both at the recomended doseage of 4oz/10gals. Yes, I'm using a total of 8 oz of each for a total of 16 oz per the 20 gals (MMO/Sta-Bil). Maybe all of this lube is why the carb'd engines run so well.

I do the same for the small equipment engines... 1oz of each MMO/Sta-Bil for 2.5 gal in the small plastic gas can. The lawn mower(s) engines wheather B&S/Tecumseh or Honda run well in the HOT summer and the snowblower, B&S/Tecumseh or LCT engines all run well in COLD winter months.

So, I do believe that MMO has it's place and I do have a BIL that swears by it for the last 40 years in outboard motors.

 

[Vikas]

Personally, I prefer TC-W3 (2oz/10gal) than MMO (4oz/10gal) dose. Except, handling TC-W3 is pain as it is very sticky.

I am not sure if you have tried TC-W3 yet in your Lexus. 16oz bottle is very cheap at Walmart. Try it for a tank and see if it is better than MMO.

- Vikas

 

[wings&wheels]

I regularly use MMO in the fuel of all of my old cars, and the 911. Several old English cars that I had specifically required it (Castrollo) and I figure it cannot hurt in moderation. I also like that it will leave a bit of an oil film on the cylinder walls of my cars w/ carburetors as they hibernate. MMO and lead substitute are the only fuel additives I will use.

I cannot prove that it has positively helped, but i will say that I have never had any valve or ring sticking issues, and no major fuel system problems even with the advent of ethanol.

I would never use it in oil though, I'm an accountant not a tribologist.

 

[DaHen]

Originally Posted By: wings&wheels

I would never use it in oil though, I'm an accountant not a tribologist.


"tribologist". Had to look that one up. Thanks for my new word for today. lol.

 

[ChrisD46]

Char baby & Vikis : Here's my experience - with TCW-3 my 3.8 L Sedona takes a normal 640:1 dose fine , my 3.1 L Buick does better with less 853:1 in this case while my 2.0L Elantra runs best with even less 1280:1 . With MMO the Sedona can handle the normal 320:1 ratio while the Buick chokes on anything more than a 640:1 ratio . The Elantra requires even less in this case 853:1 ratio before noticiable MPG drop . Lastly , MMO in smaller V6 and I4 are more tolerant of dose while TCW-3 is more fickle in these same engines . In the 3.8L Sedona I think whale oil as a upper cylinder lube would probably work and I'd still get the same 18 MPG !

 

[ahoier]

I don't see a problem running back to back tanks.....for the lubricating aspects.....if you aren't seeing "MPG Gains" every tank, I typically just chalk it up as a "must already be clean" situation....hehe.



For example, I've heard so much praise of the acetone use in the tank....soooo....this past tank I tries it? I did ~2-3 oz...in a 10-11 gallon fill up (it's a ~14 gallon tank though, according to my manual) and I didn't see any difference in my trip meter mileage.....unless it'll "give back" on the "tail end" of this tank

That being.....I usually wait til the last hash before filling up Sooooo....yea.....perhaps I added "too much" acetone...and I'm sure the acetone gurus (we don't seem to have a lot here, thankfully hahah! Other forums, they are swarming everywhere...) - but if you look at youtube videos, there's a whole bunch of youtube videos that proclaim its use as an MPG Booster.....I think the same guy that did the rare earth magnets to trip 4 way stop lights, did this one proclamation too

I could be wrong though......though I do know in some instances the magnets DO work haha.


THAT, or like I said, perhaps my system is already clean (using MMO with each fill....typically 3-4 oz. per 10-11 gallon fill up) so there's nothing to "clean" and thus no increase....


ANYWAYS....either way, I have ~1-2 oz. left of this 100% Pure Acetone, from the Cosmetic Department at Walmart, in a 4 oz. bottle.....I will go back to that same Sunoco Pump, at the same time as my last pump, and add the remainder of that bottle, and see if I get any "MPG Increase" on this next fill up Like I said, it's possible that I just "over dosed" the acetone....


But yea, I see no problem with 2-4 oz. of MMO in each fill....for the lubricity benefit alone...