Gidday again men, I've worked out that I'm saving about $4.50 a liter by blending my own fuel, 77% methanol, 3% acetone, and 20% castor. I'd rather not purchase blended fuel due to the expence. I guess to be on the safe side and have a cleaner engine, I could add a little synthetic to the blend, maybe a 10% synthetic 10%castor. I'm happy with the performance using the acetone instead of nitromethane and it's cheaper too. My only concern is how my blend will effect engine life. From what i've gathered on this thread it won't be an issue. Thanks, John.