I want to buy a new truck eventually and it would be a diesel. I also will want to store some fuel for both a tractor and truck. Is anybody seeing problems with using and storing diesel. Recently I attended a hazmat training and some storage issues were brought up. Due to the low sulfur they are finding pin hole leaks in some tanks. Because of the sludge at the bottom of the tank the pin holes basically weep and don't flow until they breakdown more. At that point it could be catastrophic. What happens is when the tank is put under pressure then they will fail under inspection. One question I have is what is the difference, I know one has more sulfur than the other, but just what does that mean, what is the purpose mechanically? Thanks in advance.