Currently and where I will be most of the time when I start WVO I will not have any ac power availible but I plan on having duel alternators and two 850cca batteries mounted in the rear with the second alternator to power them (or however it works out that I install the other alternator and batteries for better performance). How hot is too hot and how cold is too cold for WVO. Thanks for the information on the metal tanks. Will the origanal fuel lines be able to handle the high heat or do they need to be replaced and will heated diesel hurt anything even if it is used for a short time (preheating the WVO and engine for WVO use). Thanks.