Micropetrol

Micropetrol is a fuel ustilised by Crusader Tours shuttle buses. Based on its name it may be a variation of petrol which is a product of oil. A feature of micropetrol is that it doesn't need to be stabilised. (DW: Midnight)

Dude, this is just a blurb taken from one episode. You haven't told us anything about what micropetrol means or what "stabilized" means regarding micropetrol engines.

The micropetrol line in the episode was just random techno-babble. There's no mythology behind it, so repeating the throw-away line adds nothing.