Welcome to the biodiesel forum. There is no "best" way to make bio. Search this forum, and you will see people doing it in several ways. There is a wealth of info on past threads here. After doing a search come back and ask your questions, and we'll be glad to help you get started!

As for " Diesel Secret" It is pure snake oil! Read this thread: https://www.ford-trucks.com/forums/7...el-secret.html

You can also do a search for DSE on this forum and find out just what most of us think about it....