Since I have a diesel pickup as well, I bought a standalone 275 gallon oil tank from the local heating supply company, and installed a 110V AC diesel pump with a standard fuel nozzle (similar to what they have at a gas station) ordered online from Northern Tool. No more mess, and no more hefting a jerry can. Getting bulk fuel delivered is cheaper as well, not including the tax break because it's a business expense.
I do wish I'd spent a couple more dollars for an auto-shutoff nozzle and a flow meter.