I was just using Nitrodine was why it cost so much. Was mixed up by a guy ( I think last name was Griffin ) in Va that mixes Kart racing fuel. It was called his Sprint fuel which he considered weak with only 12%-15% nitro and 8-9 other ingredients that I cant remember anymore.
Other guys like to run methanol and nitro up to 20% to 30% in the stock appearing classes. I just ran the nitrodine in hotsaw - SA just to keep it easy on me, even though I knew I was given up some power on the SA saws. It didnt really matter, because I was such a slow operator anyways.