ICEMAN6166 wrote:propane is seriously affected by volume in the tank and outside temp
very familiar with this issue in the far north regions i used to live in
a 1\2 full barbecue tank (2.5 gallons) is fairly useless at -20F, bring it inside for an hour or so at +70 and it works fine.
bigger tanks like a 100 lb (25 gallons) are not so bad until they get near the bottom
when you get below -40F the real problems start regardless of volume
so if your expecting real cold weather, fill up.
That's true if your pulling off of the top (vapor) of the tank....
On a vehicle you pull liquid off the bottom of tank
Then it goes to a vaporizer which is heated by the engines antifreeze
It should give you good performance until the end....
I have no experience with cold weather yet with it
The coldest I've ever seen it in Kansas was about -17-*
And that is rare... Lot of below freezing -32* weather though
I wish TangleFoot would chime in here... He has several propane
Fueled trucks & machinery