RE: 10 or 20% nitro? that is the question
I have tried it, you can believe me or not I really don't care. Higher nitro content will make your engine run at higher temps IF YOU DON"T RETUNE IT! You can run higher nitro richer because of it's higher % of nitro.
kimberklr, I say bah to that. I have gone back and forth between 20% and 25% for the last 8 gallons in my TRX 2.5. I have even run one tank at 25% and the next at 20%. We borrow fuel from who ever has the closest bottle when we are bashing around at the track. I don't even know if the fuel brands were the same. The point is, if you keep a safe tune on your motor you will get a decent life span out of it. Maybe I would have got 10 gallons out of my 2.5 if I hadnt switched fuel so much? To be honest, I was ready for it to die 4 gallons ago.