Re: LPG problems with Territory AWD
Bill - You need to bear in mind though that fuel consumption actually increases considerably with lpg. The saving comes in the cost of lpg not the better fuel consumption. Also, power is reduced somewhat, which, given the weight of the vehicle (not to mention the additional weight of towing) could be a bad thing in a car that size. I have a BA wagon with dedicated lpg (Ford factory installation) which officially has worse economy than the petrol engine and has 27kw less power and about 30Nm less torque (which wouldn't be welcome in a vehicle that weighs over 2 tonnes). At a cost of nearly $3,000 to install it may take you at least 25,000 km just to break even.
Not suggesting not to do it - I would just suggest that you consider the increased consumption, reduced power, reduced space (due to spare tyre relocation) and calculate how long it will take to repay itself. Also bear in mind that if you're planning a long (country) trip that lpg may not be available everywhere.
'Wheels' ran a comparison test a year or so ago between the BA falcon petrol vs lpg model. They calculated that with the difference in fuel price, the additional cost of the lpg option (only $1,500) and the substantially reduced consumption that it would take about 20,000km to break even.
As for engine damage, I wouldn't be too worried about that. The motor is robust and has been converted for lpg over a long period of time without any known problems.