Hi i am new to nitro cars and need help with what fuel to use, i recently purchased a new engine (needs to be broken in) Orion CRF .12 2008 engine and as i saw online wondering what is the meanings as stated on nitro fuel such as 16%,25%,36% ><. oh and 1 more thing for glow plugs i wondering whats the difference cold, medium and hot.

Thank you

your fuel will run a nitro content of say 16% the rest is made up of oil and methonal usually 5% and 5% and 74% depends on brand some fuel may not be exact thats why its important to get a reputable fuel brand, the higher the nitro the more power you get, 16% is usually for .12 engines and 20-25% is for .21 and up, the plugs will have either a cold element up to ultra hot which is used depending on the engine and air conditions and also factory recommendations on all of the above.
cheers

ah thats what there mean, so for my .12 engine for best result i should be using 16% nitro. thanks for your response ^^

use plug 6 to be safe for 16% nitro in Australia.