Man, here we go again.

tenfigure, you are correct in that "car fuel" is much more expensive than "airplane fuel". You have already heard conflicting opinions. Here's mine;

I have been running Omega 10% nitro "airplane fuel" in an RC-10 and Nitro Rush (and now MT2) for several years. It works just fine. This was after I paid $6 more for a gallon of 10% "car fuel", and almost burned the Nitro Star .15FE up because it was overheating due to low oil content.

I tested that popular brand of car fuel and found it to have LESS oil than my airplane fuel. This test is simple and can be done by anyone. Find a graduated container that you can figure percentages from. The little mixing cups that have milliliters engraved into the side are perfect.

Pour in a quantity of fuel to equal 100%. Let it sit for a few days. The methanol and nitro will evaporate; what's left is oil. See how much is left, compare it to the 100% figure you started with, and you'll know approximately how much oil is in that particular fuel.

Personally, I think the car fuel is more expensive because the fuel companies know they can get away with it. Car guys don't use as much of the stuff as airplane and heli guys, so it doesn't bite as much when you buy fuel.

I have noticed, via ads, that Trinity and a few others are now listing higher (18%-20%) oil contents. Good for them. It still isn't worth ten bucks a quart, which translates to $40 a gallon. That's simple larceny. You can buy airplane fuel with that much oil (and nitro) for less than $20 a gallon.

The conventional wisdom that running airplane fuel in a car/truck engine will ruin it is absolute BS. A lot of us who fly aircraft mainly, and run the trucks as a diversion, run airplane fuel in our vehicles every day. Some folks are brainwashed into believing that you simply MUST run the more expensive "car fuel".

We know better.

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