I will be changing over to EVANS coolant the waterless stuff as my next project. I would like to try it on my dodge cummins before I use it in my cummins and cats in my semi's. The question I have is how many gallons do I buy? I can not find any answers to my questions in the search function. I will completely drain the system dry. radiator engine block, heater coils everything as best I can. thanks for your help I will be changing my serp belt and all radiator hoses whilst I do this mid winter bomb. A christmas gift from me to me. 
