posted 06-24-2004 10:00 AM ET (US)        

Should I be using this fuel additive?. Anyone using it please give me advice.

posted 06-24-2004 11:39 AM ET (US)            

I use it. Sometimes I dont have any with me when I fill up so I'm not religious about it, but I try to regularly make it part of my routine.

I would also recommend highly that you use 'engine tune' or some other decarboner that you spray into the carb throats as it runs. Then let it sit overnight and run it out the next day. There are other threads about this process. I do this once a season before I put it away for the year. I'll probably try to do it once mid season also this year.

posted 06-27-2004 11:03 PM ET (US)            

You can get it at any Autozone.

posted 08-31-2007 12:59 AM ET (US)            

The reason I ask: you can often buy a higher grade of oil which will reduce carbon deposit formation in the motor and eliminate the need for using fuel additives like Ring Free for only a modest increase in cost per gallon over the plain TCW3 oils. If may be less expensive to feed a motor a steady diet of good oil than to use inferior oil and compensate with expensive treatments of Ring Free.

posted 09-01-2007 01:12 AM ET (US)            

How do you know? I am hesitant to mix Marvel Mystery Oil in my gas.

I use Chevron with techron mid grade gas with Mercury Premium PLus oil. I think these are the highest quality gas and oil that can be put in a Mercury motor. If there was something that wasn't as expensive as ring free, that I could add to that mixture to improve the efficiency of the motor or improve its performance, reliability or durability I sure would use it. I am concerned that some of this stuff might do more harm than good to my motor; In other words,should I leave well enough alone.

posted 09-01-2007 08:45 AM ET (US)            

Yamaha Ring Fee is similar to Techron and Techron Concentrate. The main deposit control additive is the same. Techron and Techron concentrate are designed for automotive four-stroke engines as a deposit control additive. Yahama Ring Free is formulated specifically for two-stroke engines.

The amount of Techron that is in Chevron gasolines should be beneficial for two cycle engines. All Chevron grades of gasoline contain Techron.

Good, quality, detergent cleansing action will be realized with Chevron gasoline in your engine without any concern.

The use of Techron Concentrate Fuel System Cleaner is not recommended for two-cycle engines.

If you do want to try a product similar to Techron Concentrate Fuel System Cleaner, the following rebrands of Techron Concentrate formulation

for marine two and four cycle engines are specifically approved and recommended by the Marine Original Engine Manufacturers (OEMs):

Yamaha Ring Free

posted 09-04-2007 11:15 AM ET (US)            

In 2004 both I and my brother bought new Yamaha engines. Mine was a 225 Vmax EFI (2003 leftover) and he bought a 2004 EFI saltwater series.

Every ten tanks of fuel I would drop in the tank a quart [of Ring Free as a] "shock treatment." My brother never added anything. I did it on faith and could not stand the cost.

This spring, we serviced our engines. I had three times the amount of hours on my engine. Part of the service was to replace the O2 sensor. When he took his apart, the Pintal valve was almost clogged solid with carbon. When I went to do mine, it was clean as a whistle.

Maybe this is not a "fact" but it did make me feel better about dropping the cash on the Ring Free.

Now, another thing I noticed is that after I dropped in the Ring Free, I had a propensity to foul a plug or two. Now, I did not put the connection together until I saw the carbon build up. I asked the dealer who said that sometimes if there is a little build up it will come off and foul the plugs. Maybe that is proof it is working? One thing I took from that is that I do not put in RF before I go offshore. Just FYI.

Be well

posted 09-09-2007 04:32 PM ET (US)            

>>>>tully_mars posted 06-27-2004 11:03 PM ET
-----------------------------------------------------------
...Marvel Mystery Oil. .. and the back of the bottle reads exactly the same as Ring-free. I would say Yamaha copied Marvel Mystery Oil since it has been around longer.<<<<

Ingredients from Material Safety Data Sheets

Marvel Mystery Oil:

1,2-Dichlorobenzene 0-1%
Stoddard solvent 20-30%
Hydrotreated naphthenic distillate solvent extract 70-80%

Yamaha Ring Free:

posted 09-09-2007 05:50 PM ET (US)            

V/S

1,2,4 TriMethylBenzine 2%
Petroleum Distillate 25%
Xylene 3%
Propriatary Additive 70%

++++++++++++++++++++++++==

So:

Since Stoddard Solvent *is* Petroleum Distallate (20-30% v/s 25%)

and

Since my guess is that "naphthenic distillate solvent extract" (70-80%) is another man's "Propriatary Additive" (70%) we're talking "Po-Tay-To" and "Po-Tah-To" here......

I have used Mystery Oil in aircraft engines for years, BTW.
Maybe it doesn't help, but it sure don't hurt either.
Seriously, we have a lot of issues with lead fouling in aircraft engine spark plugs, and Mystery Oil is VERY well proven to keep those deposits soft enough to be burned out and not become a hardened mass on the electrodes. Used it in outboards for years too, and never a carbon issue ever.

Dave