And depending on what engine you use, could determine what fuel you run. Example, My brother and I both had Nitro Rustlers with 2.5. I could run almost any fuel. His would not run worth squat on anything other than Top Fuel. Don't let me discourage you, but nitro is not plug and play. Companies today make the RTRs very reliable and easy to get started, but you will need to do some tuning from time to time and you may have to experiment to find the perfect fuel for you. Then again, some people run dishwater in their cars with no problems at all .