alcohol/methenol

The maintenance is minimal, IF you buy it by the drum and use a good top lube. I've run alcohol in everything from an 8/1 compression small block to my current 14/1 540" big block. I've gone faster with alcohol every time.

You will use more fuel but it will probably cost out cheaper than running race gas. Also weather will have less effect on round to round et changes. It will run MUCH cooler and you will almost certainly go faster. Good stuff!