Originally Posted by
Sport_Pilot
I don't know why you would pay $30 for a gallon of fuel when you can mix it yourself for around $10. It is not hard to do.
I'm with ya on that. The investment in the chemicals is high up front, but one batch of chemicals has me covered for two seasons. Roughly $120 gets me about 7-8 gallons of mixed fuel with some of that being 20-25% nitro in buggy fuel. Aircraft fuel is $8-12 a gallon.
I only have a couple engines that will run well on 15% nitro without adding a head shim. I use no more than 5% nitro in my old SuperTigres. The smaller ones seem to tolerate 10% fine, but 200rpm isn't worth the extra couple dollars worth of nitro.
I like castor. It works good.