mate of mine from work (now moved away*) used to run his Land Rover (old sytle proper one, not one of these new soft roader boxes) on refined chip oil
He once spent several hours explaining to me the entire process
All very interesting, and he paid virtually nothing for his fuel, all 100% legit
And his 'Landy' was more than happy on it
Wouldn't recommend it for the Civ though
* this had nothing to do with the smell.
Apparently 