15% TO 30% nitro fuel.
 

Does this really matter what gas you use for your nitro car or truck?? And is it possible just to use regular gas from your car for you nitro car/truck.

RE: 15% TO 30% nitro fuel.
 

No, never use gasoline in that engine, it would not work and be very dangerous. Use a methanol-based fuel with oil lubricant and some nitromethane, 15% is often fine for regular car and truck runs. Use higher nitromethane content for racing and competition. These fuels are more expensive than gasoline, but you can buy them in quarts from SIG and other companies and your local hobby shop. Please get some help from other modelers who run cars and trucks and they will point you in the right direction and help you get started.:)