I use Roojai they cover breakdown, I always carry water in the car just incase, I service it myself so I really know it will never fail, I also have an ELM327 for code reading on the spot came in handy once when the car went into limp home mode, still drove but lacked power until I fixed
strange LPG car engines last lots longer that petrol, they run cleaner due to no carbon deposits, oil lasts much longer, no pre ignition or detonation, if your theory is correct why do Bangkok taxi use it and on