|I recently went driving with buddy in a Landrover Defender 110 turbo diesel, and we were using 100% vegetable oil left over from fast food chains, collected, heated up, purified, had chemicals added to the mix, and then stored in large tanks.|
The SUV did fine in power, acceleration, speed, etc.
The cost was USD 2.64 per gallon, a very reasonable price.
No engine conversion was necessary for using 100% mixture.
Other folks were using it in a 80/20 mix (diesel/vegeoil) due to some silly company fleet regulation.