While we're on the topic I've been researching this DIESEL SECRET and found out the following: If you mix this according to their specifications, it will not thin the vegetable oil down enough to make much difference, and their secret additive is Xythol Paint stripper with mothballs in it. They got shut down in Europe for selling this stuff. However, if you have an old IDI diesel, SVO runs pretty good in it, I know someone who has been running it in a chevy 6.2 and has 17,000 miles, with no modification, not even a heater system.