I don't think the weight is an issue for me as seem to use the same loaded or unloaded, I am certain my Van is running as it should as have the gasses analysed all was ok and it's never been different since I had it but for the life of me cannot normally get better than just under 14 l per 100km @ 100kmh flat road, wind behind me
One time did manage to get from Flensburg Germany all the way to ferry port Hirtshals on 52 litres, but was blowing a gale behind me.Tanking takes time and always have the problem that it makes me want to Pee but normally you can't stop and start like with tanking Petrol, so end up dancing about for what seems like an eternity. If I could find a way of de-canting gas bottles into my tank I would do that as well
it's all down to pennies in the end, but with the amount I use it all adds up to saved pounds and it's substantial. I would love a 200 litre cylindrical Stako tank. Another problem is my Van is registered in Poland, and it's worse than Mongolia for rules and regulations, a tank must be examined and certificated after 10 years, then 20 years old cannot be used again. As far as I know nobody ever looked at it on an MOT in Holland or anywhere else for that matter.
I went out yesterday evening and euro 95 was 13.72 nok a litre, tonight on my way back from work 16.22 nok a rise of 25p a litre overnight, at the lowest price it would be better to drive on petrol as the saving is minimal with lpg.
Transit the everyday mans van....