Hi, I just wanted to add that it was only after I had been running my 93 XJ on gas for 18 months or so that I realized that the fuel pump was still running even when it was on gas. There is no need for the pump while on gas unless the gas tank is nearly empty and you might need to switch back to petrol. I have fitted a cutoff switch for the fuel pump and switch it off as soon as it is running on gas, I'm sure this will extend the life of the fuel pump. Lighthouse Jeep spares will not sell you a fuel pump if you are running on LPG, ask me how I know. I can only assume that this is due to the number of returns they have been getting. Hope this helps.