Originally Posted by
burnineyes
My experience may be a little different than most of you, but it should be relevant nonetheless. I dont have a large scale RC, but I used to own a mostly stock Martin Monster 23cc scooter and I have run high octane fuel in it with amazing results. Results based on a cheap Bushnell radar gun, tuning the mixture on the fly for each run, with several passes for a fair average.
Pump 87 octane+Tech 2000 2-cycle oil+Me= 23mph top speed
VP 118 octane+Royal Purple 2-cycle oil+Me= 27mph top speed
Out of all passes the smallest difference was 3mph, average of 4mph difference from several passes. This might not seem like much, but dont forget it was carrying me, at 190lbs. I imagine in a RC, this could translate into much larger gains. As a certified auto tech, I have always understood the same theory that Ridley has posted above. But experience tells me the engine manufacturer may not always have it right, and it might be worth a shot. I have seen some full size cars experience large gains in fuel efficiency and power from higher octane fuel when the manufacturer recommended 87. Yet other cars have shown zero benefit from the same treatment. As I said, not necessarily a direct comparison here, but it should be relevant to the discussion.
Has anyone tried this 2-Cycle Oil, and if so, what do you think about it? This is the only oil that my local auto store always has available for $5.99 32oz.
Semi-Synthetic 2-Cycle High Temp Racing Oil
This product is a "low smoke" two-cycle oil formulated from a special blend of mineral oil, polybutene and a low ash additive system. Lucas 2-Cycle Racing Oil is specially designed to prevent carbon deposits to the piston rings, skirt, crown and under crown areas and prevent exhaust port blocking. It is prediluted with a special solvent to facilitate mixing with gasolines at all temperatures.
Lucas 2-Cycle Racing Oil is recommended for all air and liquid cooled two-stroke engines and lower specific output air-cooled engines functioning under all operating conditions. Meets the requirement for "low smoke" oils often referred to as "smokeless" oils. Designed primarily for use with oil injection systems where no fuel/oil premixing is required. However, it is also acceptable for use in premixes of gasoline and oil up to 50:1.
Key Benefits
.Prevents carbon deposits
.Mixes well with gasolines at all temperatures
.Meets requirements for "low smoke" oils