About 15 years ago my step dad done some work and ended up with several 55 gallon drums of off-road diesel fuel. There’s around 140 gallons left, 2 drums are full and one is a partial. These were stored in the dry but not climate controlled. One is in a plastic drum and the other in a metal drum. I don’t remember which, but I popped the lid on both and one smelled just like the diesel but the other didn’t really have a smell. I don’t think running this stuff in a tractor is ideal, but I do have uses for it. But my question is how potent is this stuff still? Am I being too cautious not wanting to run it in a tractor. I don’t even have a diesel tractor but I know several that do.