What is everyones opinion on the use of fuel additives, especially in today OHV OPE engines?

Example:

Lucas Fuel Treatment

Lucas Fuel Treatment

A powerful blend of oils and additives that contain no SOLVENTS. Designed to increase power and fuel mileage and also lower exhaust emissions through a more complete combustion. 

Lucas Fuel Treatment is formulated for both gasoline and diesel engines, carbureted or fuel injected. It gives your fuel system what it really needs - a blend of super slick oils and additives with a high detergent action that allows the engine to operate at maximum efficiency. Also, it cleans and lubricates the carburetor and injectors and causes the fuel to burn more thoroughly for increased power and less fuel consumption. Lucas Fuel Treatment should definitely be used in vehicles that require leaded fuel because it actually replaces the benefits of lead in gasoline without causing harmful emissions. Use it to pass smog tests. Finally, it totally neutralizes the harmful effects of low sulfur diesel fuel.

Key Benefits

• A great tune-up in a bottle
• Cleans and lubricates the fuel system
• Neutralizes low sulfur fuel problems
• Increases power and miles per gallon by burning excess exhaust emissions
• Increases the life of pumps and injectors

I'm not familiar with the Lucas stuff, but I have been happily using Stabil in everything for decades. If the gas is kept fresh, I don't see any need for fancy additives designed to help performance. The Lucas treatment does not appear to be a fuel stabilizer.

With Stabil I have NEVER had a "bad gas" related problem, and the equipment starts up easily after storage. Anyone who has sniffed really old fuel will understand what happens without stabilzer - it gets _really_ nasty. I once checked the gas in a motorcycle that had sat for over 5 years and the smell would just about take the top of your head off. It would in no way run until the carb was degunked and new gas was added. Stabil won't protect gas for 5 years, but it sure works for periods of 12 months or less.

http://www.goldeagle.com/sta-bil/index.htm

John

Hi...


For the diesel in my tractor & truck...
I use Power Service Diesel Fuel Suplement... usually in winter/cold times...
It helps prevent the diesel fuel from gelling at low temperatures...
...and does some other things too like increase the Cetane level... (like octane level in gas)...
I know it makes the engine run quieter in the tractor and especially the Dodge...

I add Pri-D to the tractor's diesel  fuel as soon as I buy it... so i know it's always treated...


Dave...

Well, I run 93 octane in all of my OPE and,  from the best sources but, I am curious if this would help any at all? I don't see why it would hurt? I run the stuff in my automobile engines periodically.

Marshall...


Based on other posts I've read...

Use the octane recommended for the OPE...

87 octane combusts easier/sooner than higher octanes like 93...

The higher octanes ignight  later than lower octanes to prevent "pinging" / "pre-detonation" in more sophisticated car engines...

So it seems... 87 may give better performance in the simple OPE engines...


Dave...

Dave thank you. But, that's exactly why I run it, Kohlers love the 93 octane. 

Speaking of oil and gas, I wonder if  Blue99 made the switch to the new forum?

Sorry for the late reply.

I use Stabil in all my equipment and never had a problem sence! Stabil will keep fuel good for a year without a problem.

I was told by my local OPE dealer that there is a direct relationship between compression and the need for higher octane to prevent pre-ignition. I was told the higher the compression the higher the octane necessary. He said to use no lower than 89 in  2cycle equiptment and that all the 4cycle he had sold in the last ten years required only 87.

I started using SeaFoam in my lawn equiptment last spring after reading the recomendation by Tecumseh Man. The stuff seems to have had a beneficial effect on my carburetors as the transition from low to high is definitely smoother in both 2 and 4 cycle engines. I have also used the spray in some really balky poorly maintained engines belonging to friends and in SOME cases a rebuild was avoided. We are talking carburetor rebuild.

Don't you just hate gummed up carburetors? I've had to unmount the engine on some lawn mowers just to get the carb off! The government needs to put adjustable jets back on ope and mandate designs where removing a carburetor takes no more than 2min.if they are going to keep making us use this $hitty gas that can't sit for more than a month without deteriorating. Put that plank in your platform Mr. Politician and you just might get my vote!  While you are at it how about repealing the really stupid laws that are causing the demise of 2 cycle ope?

Marc

That explains it all.  Thanks Marc.  It is disgusting how some engine manufacturers are mounting the carbs on engines.  Probably just so we have to take them in to be easier on ourselves.

I don't know much about additives vs. octane level. My JD Mower says using higher than 87 (89?) octane can cause permanent damage to the engine. (for what it's worth) Walt