You guys are so lucky being able to get nitro so easily, here in the UK you have to have a Home Office (that's like Homeland Security) registration to buy nitro. Its because nitro can be used for bomb making by terrorists, you also have to keep records of use and you cant sell of the back of your trailer. Basically you have to be a company and if your claiming sponsorship to have a decal on the car. I only want to try 20% or so and not buy a 55 gallon barrel which would take me forever to use and I couldn't sell on to another racer. I've seen small quantities of 20% for radio controlled model cars but because they have 2 stroke engines, castor oil is added for lube. Would smell nice but not do much for the plugs! Has anyone tried it?