FOUR WHEEL DRIVE CONTINUOUS DRIVING ?

Super saft question and being a sort of Newbee to Hijet, I'm towing a trailer for a good distance tomorrow and I know Lpg isn't a good kick going up hills.
Was wondering if I leave the four wheel drive locked in for the whole journey some 120 miles? I respect consumption of fuel is dropped drastically but towing surely will help the little beast? Will it be harmful?
Cheer's Jetter's!
'W'

4wd system on a Hijet is for low speed use only, e.g. under 40mph

You will break the chain in the transfer box if you load it with the tow.

As a Hijet cannot tow any more than 600kg, you will not have any problems.

And LPG is fine really for all this sort of thing.

Thank You for quick response, sort of thought long distance could be naughty. Beauleiu International Auto Jumble awaits.
I'm used to using a Chevrolet Astro V6 4.3ltr However finance needs had to let her go, saying this Love my Little Red Pig!
Cheer's for useful info.
Paul 'W'