Like I said, I've never had LPG before so as an outsider/ beginner with this can't say there is any issue with it day to day. I keep switching from gas to petrol now and again coz someone said it helps to keep both systems flowing..(who knows.!). My only little gripe is the lack of filling points and they do seem to be getting fewer..but that maybe just down here in Cornwall.I've heard some LPG users recommend that you run on petrol for a hundred miles or so after every 2nd refill of LPG to help lubricate the valves. Dunno if this is true but I would run my Kia on petrol every so often.
Col