As I drove by a gas station today, what I saw on the price board in the lot made me think. Kerosene- $2. 65, Diesel- $2. 85. Lets assume you were not in danger of running out anytime soon, but the prices keep going up every day, so you decide to top off the tank. What would you do? K or D? I know it isnt alot of difference in $$$, but its the principle that irritates me.