Rc Fuel Faq
Hey Dan, nice to hear from you.
I posted the following over in the other forum for the benefit of those reading this thread:
I'm not a chemical engineer but I have noticed that nitromethane will attack many types of brass including some of the popular brass tubing stock found with some tank manufacturers. The brass will turn black and then get pitted and finally fail. This can happen from the inside or the outside.
An additional factor is that the burnt exhaust gasses, if vented into the tank will accelerate this since it contains nitric acid (if not mistaken) if nitromethane is in the fuel.
I always use the nylon or plastic tubing that comes in some of the popular tanks now. Just heat it up with a heat gun and it bends any way you want it.