Carrying extra fuel in Canada

MarkTwain wrote:

TravelinDog wrote:
My wife and I are planning to drive up to Alaska this summer with our new 5er and I'm wondering if anyone knows if it is legal to carry 10 extra gallons of diesel fuel.
I don't want to be caught short between fill-ups in Canada or Alaska where I've been told never to pass up an opportunity to fill up the tank.

My suggestion is to have a auxiliary diesel fuel tank installed. safer choice. I have a 60 gal. tank installed by Transfer Flow company located in Chico Calif. I can drive close to 1000 miles before needing fuel. Give them a call and ask what options you have. They can install the auxillary tank in 1 day. They will also ship the tank to your home town.

What exactly is unsafe about a couple 5 gal jugs of diesel in the truck bed?

For extra range it's a nice idea. I'm sure Canadian people use fuel jugs. How else to they fill up lawnmowers and other small equipment?