Starting to use MMO in fuel

[badtlc]

Originally Posted By: demarpaint
Originally Posted By: badtlc
MMO recently improved my MPG by 2.5 MPG on a very long road trip. Unbelievable results, especially when I fail to mention that I also had a 35 MPH tail wind. If I ever mentioned that little fact, people might get suspicious.

PS: Overall, my MPGs have dropped after starting the use of MMO in fuel in 2 different vehicles. About 6,000 miles of test data accrued so far. The first 4,000 miles was done with 4oz/10gal and I have switched to a 3oz/10gal with no recordable changes from the 4oz method.


YMMV. Winter time is a tough time of year for recording mpgs, at least I always found that to be the case. My wife has a habit of starting an engine, then run in the house pour some coffee for her trip to work, or do other little tasks while she warms the car. Little things like that, and the lousy blend of fuel cut into my mpgs. The engine also runs richer longer during cool and cold weather. 6000 miles of data is pretty good though. Stay with it and see what happens.


All variables are accounted for and only apples are being compared to apples.

 

[demarpaint]

Might be time to stop the use and see if Lucas or TCW3 works any better for you. Have you tried any of them?

 

[shpankey]

Originally Posted By: ThirdeYe
Okay, since I didn't really notice anything in my car, I decided to add 4oz. to my girlfriend's Grand Am. As far as I know it's never had any fuel additives added to it and it's always had this problem of a wildly fluctuating fuel gauge that reads full, then empty, then full, then empty, all over the place. I'm going to see if MMO can touch that without replacing the sensor. I'd be amazed if it did, but I'm not expecting much.

I have the exact same issue on a 1996 Cavalier Z24 with a 2,4l DOHC engine.

 

[demarpaint]

I would try a shock treatment vs the suggested 4 oz./10 gallons it might just free it up. I've had my son add a qt to the gas in his 323i with no ill effects, and I've had even more than that in my Aerostar w/o issue. Maybe a pint to a full tank of gas would help. JMO

 

[badtlc]

Originally Posted By: demarpaint
Might be time to stop the use and see if Lucas or TCW3 works any better for you. Have you tried any of them?


Yes, I have used Lucas before and stopped. The only additives that have made a measurable difference so far are Regane and Amsoil PI.

 

[demarpaint]

I had some good luck with RL Complete Fuel System Cleaner too. It is a UCL and cleaner which can be used all the time as a maint dose. Something worth considering, since it offers the best of both worlds. Have you tried that?

 

[badtlc]

Originally Posted By: demarpaint
I had some good luck with RL Complete Fuel System Cleaner too. It is a UCL and cleaner which can be used all the time as a maint dose. Something worth considering, since it offers the best of both worlds. Have you tried that?


Nope. Maybe when the irrational mass hysteria hits that product i'll try it, too, to verify it isn't as effective as placebo.

 

[demarpaint]

Red Line has a great reputation here, I don't think there will ever be any mass histeria

.

 

[ThirdeYe]

Originally Posted By: shpankey
Originally Posted By: ThirdeYe
Okay, since I didn't really notice anything in my car, I decided to add 4oz. to my girlfriend's Grand Am. As far as I know it's never had any fuel additives added to it and it's always had this problem of a wildly fluctuating fuel gauge that reads full, then empty, then full, then empty, all over the place. I'm going to see if MMO can touch that without replacing the sensor. I'd be amazed if it did, but I'm not expecting much.

I have the exact same issue on a 1996 Cavalier Z24 with a 2,4l DOHC engine.


Well, I'll be sure to post here if it does anything.

 

[Bror Jace]

badtlc, it's not 'mass hysteria' ... the product works.

Two personal examples:

I had a friend who was getting just over 20mpg in an old VW Rabbit (fuel economy meticulously tracked). I happened to have a 1/3 bottle of RLO SI-1 on hand, gave it to him to pour in and one tankful later, it jumped to an even 30mpg.

My Dad's girlfriend had a 90s Honda Prelaude that developed an intermittent miss. Suspecting bad fuel, I dumped 1/2 of a bottle of SI-1 in it and took it for a drive. Less than 5 miles later the car was running smoothly again.

That's just 2 examples that come to mind.

 

[badtlc]

Originally Posted By: Bror Jace
badtlc, it's not 'mass hysteria' ... the product works.

Two personal examples:

I had a friend who was getting just over 20mpg in an old VW Rabbit (fuel economy meticulously tracked). I happened to have a 1/3 bottle of RLO SI-1 on hand, gave it to him to pour in and one tankful later, it jumped to an even 30mpg.

My Dad's girlfriend had a 90s Honda Prelaude that developed an intermittent miss. Suspecting bad fuel, I dumped 1/2 of a bottle of SI-1 in it and took it for a drive. Less than 5 miles later the car was running smoothly again.

That's just 2 examples that come to mind.


You might read what you thought you read again. No one said anything about mass hysteria following Redline at this point in time. No one said anything (using my handle) about the performance, good or negative, of redline's product.

 

[Cmarti]

3 tanks MMO 4oz/10 gal at 13-13.5 MPG in town. This is down from the stellar 14.5 I usually get in my F150. It was back to 14.5 on the next tank w/out MMO. The MMO may have other bennefits

, but MPG has not been an obvious one in my application.


I will still use it in my 15 Gal power equipment storage tank for stabilization and gum prevention in my small engines.

Of note, In my first two oil applications the fill and valve cover area are clean in under 500 miles. That alone is not benneficial, but I am surprised, and it may indicate the solvents are at work.

 

[Capa]

Originally Posted By: Cmarti
3 tanks MMO 4oz/10 gal at 13-13.5 MPG in town. This is down from the stellar 14.5 I usually get in my F150. It was back to 14.5 on the next tank w/out MMO. The MMO may have other bennefits

, but MPG has not been an obvious one in my application.


I will still use it in my 15 Gal power equipment storage tank for stabilization and gum prevention in my small engines.

Of note, In my first two oil applications the fill and valve cover area are clean in under 500 miles. That alone is not benneficial, but I am surprised, and it may indicate the solvents are at work.

Interesting, I also experienced a drop in MPG using MMO in my van. I used the prescribed amount. My other car neither gained nor lost mileage.

 

[CourierDriver]

When I would go into an az store and asked for an injector cleaner,they always handed me a Lucas bottle, the small one. No one ever handed me mmo or other products, guess it was just a fluke.

 

[sr17]

Seems that mmo has lost traction on here lately, so I figured it is time to breathe some new life in to this thread

Have now used mmo steadily in the tank on my Accord for about 3,000 miles. First I thought the car ran better and felt more responsive - then after a couple of tanks with mmo, I thought the effect had faded and started questioning whether it did anything at all.

My car is due for a valve adjustment and under certain conditions I could hear some clatter under the hood.

Then last week I was going for a long drive and decided to fill the tank and skip mmo since I thought it did not do much.

After a few miles of driving, to my surprise, the valves got so noisy that it really made me nervous - I could not believe it!

I used up 2/3 of the tank for the trip, then filled it up at the end of the trip and added mmo back in - and the valve noise seems dramatically reduced again!

I still can't really believe it - is this the effect of mmo, or am I just dreaming?

On another note, I have been tracking fuel consumption closely with mmo and did not see any gains - and on a couple of tanks where I overdosed just a little bit, I had a feeling I lost mpg.

I have started adding mmo in tank on my Astro van also, and the initial impressions are very good, feels like it has more power. But again, I wish there was a really good way to quantify it, as I am sometimes not sure if what I perceive is reality, or if it is just working for me because I so badly want it to work.

 

[jonny-b]

I have no personal experience with MMO, but I have seen many users report that overdosing will result in lost MPG.
It will not harm anything, though.

Another thing that can influence the MPG, is because of the cleaning effect MMO has, so that temporarily, the MPG goes down(1-3 tanks of fuel) before it increase.

 

[Jimmy9190]

I started using MMO in my gas about 2 months ago. Then I started using it in the oil too and it really does help my engine run quieter and have more power. So, no I don't think you are dreaming. I did an oil change without MMO and right away noticed the engine was noisy again. MMO quieted it right back down again. In my case, I found it better to add about 10 to 12 oz MMO at the beginning of the OCI then add it again at 1500 miles, rather than substituting a quart of MMO for a quart of oil.

As for using MMO in the gas, I had the same problem with lower MPG at the 4 oz to 10 gallons dose. Then I cut it in half, using 2 oz to each 10 gallons and my MPG went back up and is usually at 17 to 17.5. Just for testing I added about 3 oz per 10 gallons and it went down again. So, maybe try a lower dose and see if it helps.

The interesting thing is no matter what the dose I used, MMO helped my truck run quieter, and it improved the power and throttle response. The lower MMO fuel dose seems to bring about better performance though. My truck is a little faster and has a more noticeable gain in performance at the lower MMO dose.

 

[demarpaint]

What I've learned over the years of using MMO is to experiment like Jimmy9190 did. Start with the suggested dose in the gas, if mpgs drop reduce the dose. IMO a gain in mpgs is always a nice perk, although many people don't see it. I'm after the UCL benefits when adding it to gas.

We recently had quite a bit of snow, and I always add MMO to the gas in my snow blower. I tried a tank of gas without MMO, and noticed a slight sputtering. Once I put the MMO into the gas after about 10 minutes the sputtering stopped. I'm wondering if it has something to do with the fact that the carb was adjusted with MMO in the gas? Or if it just gives a better ring seal and that smoothes things out? Something for me to fool around with next time I have the machine out.

 

[Vizzy]

DO NOT USE MMO in your fuel system!!!!!!!!!

The engineers that designed your modern car would have recommended this snake oil if it was worth it BUT THEY HAVEN'T!
Check your owners manual most MFRs specifically state NOT to use additives AT ALL!

The only thing that should go into your fuel tank is good quality fuel with the proper octane number...aside from that it is safe to use specifically formulated fuel injector cleaners with approved gas detergents, like PEA........... OCCASIONALLY!

You're asking for trouble especially if your car is under warranty!

You're likely to do more damage tham good using MMO in your fuel system!!!!! You've been warned!

 

[jonny-b]

Originally Posted By: Vizzy
DO NOT USE MMO in your fuel system!!!!!!!!!

The engineers that designed your modern car would have recommended this snake oil if it was worth it BUT THEY HAVEN'T!
Check your owners manual most MFRs specifically state NOT to use additives AT ALL!

The only thing that should go into your fuel tank is good quality fuel with the proper octane number...aside from that it is safe to use specifically formulated fuel injector cleaners with approved gas detergents, like PEA........... OCCASIONALLY!

You're asking for trouble especially if your car is under warranty!

You're likely to do more damage tham good using MMO in your fuel system!!!!! You've been warned!


Just wondering how to do the search on Google, that will bring up all the engines being destroyed, when using MMO in the fuel, Vizzy.
It should be several hundred of thousands hits on this topic, shouldn't it?

I could not find any, but then, I must clearly be doing something wrong, so I would appreciate your help on this topic