Brand do you use and what % and why?
THANKS

Morgan Fuels, OMEGA 15%

I have used Morgan fuels for many years.

What I like the most about it is the oil content, and the ratio of synth and castor mix.
I prefer a higher content of oil in the fuels I use (Omega contains 17% ). Also that the oil mix has a good percentage of castor ( Omega contains a 30% castor, 70% synth mix).

SIG 15 %
Why ? - cheapest usually , and since there is only one manufacturer of the methane in the world , I figure like PRO , the only remaining factor is the castor .
WHy 15 per cent ? The lower the content of n , the longer lasting your motor lives . ( unless , of course , I run across a motor that needs a little more , then I will use 20 and then sell the motor .

Sig 15% Pretty much the same reasons as mentioned above.

I was using wild cat Nitro 10%
Oil 18% (80% synthetic, 20% racing castor)
IS this any good? I know when i run 10% in my R/C cars once it did not run no way near as good as 20% is this why you guys go with 15% heres wildcats 15% specs also
Nitro 15%
Oil 18% (80% synthetic, 20% racing castor) Another ? i have is do these 1 way valves realy make your motor run better? [link=http://www2.omnimodels.com/cgi-bin/woi0001p?&I=FORQ1738&P=7]Valve[/link]
THANKS

Depending on the mfg of the car engine, 10% may be too low a nitro content for the engine. These engines are ported differently (even most 'sport' car engines) than are aero engines. They are designed with the idea of using more nitro to begin with, and all are designed to use some type of tuned pipe.

Most guys around here use 20-30% for their car/truck engines.

It is not feasable to compare the performance of a car engine and an aero engine on equal levels.