I used Byron's in my airplane engines since it first came out, and have been using Byron's Race Formula 3000 with great results for the past year. A look inside the engines shows no deposits or tinting of any kind.
Mugen duel is the same as Byron's, too.
I [I]AM [/I]the Driver !
Murnan Modified Motors
Rocket Science Fuels
Auto Racing, Mountain climbing, and Bull fighting are the only true sports, all the rest are just games.