Replacing a gas engine with a diesel

To quench everyone's curiosity: I want a diesel because for me, it would be cheaper. I was given a biodiesel kit recently and have successfully made biodiesel before. I didn't want to mention it because I get very mixed reactions when I mention that I intend to make my own fuel. Many assume that I have I idea what I'm doing, plan to evade taxes (I intend to fill out the proper forms), worry that I don't know I need a 2 tank RV (one for regular diesel until the bio warms up) and filter heaters (I already have a universal set.) or that I will need to change the blend in winter. I know and I choose to pursue this anyway. The reason I didn't mind that I wouldn't be able to re-sell it is that this is going to be my home. I don't intend to resell it until it can no longer be used, at which point I will sell it for parts.
Anyway, I get now that my original idea isn't feasible. I still plan to pursue an older diesel MH. Thank you to everyone for your feedback.