Hi, thanks for the info, I am losing about 300ml per 100 mile or perhaps a little more than that, has had a new radiator just before I bought it, not got LPG fitted. I have looked carefully with engine running and have put paper below engine to try a see if any leaks but no joy. I think it does smoke ( light coloured) when ticking over with engine hot. The vehicle runs very well and has never over heated, heater also works very well.
I think I can see water marks coming down the big radiator hose from beside water pump to bottom of radiator and it sounds noisey,
Cheers
Donald