I'm looking into a veg oil kit to use when I drive out to the desert. . The kind that start out on diesel then switch over to VO after things heat up. then back to Diesel to refill the injection sytem before shutting down. . I've peeped the Frybrid and grease car systems. Anyone here have positive experiences with these kits. are there better kits out there?. . Still in the planning stage at this time... . 
