I try to use BP premium But Shell or anything premium at times. I'm not sure how many of you remember when you used to clean a carb, the red residue that was so hard to get out ? That was a dye put into all but about 4 brands of gas-amoco,phillips66, and a couple of others i dont remember. The reason they put dye in gas is so the people who transport it and work at the tank farms could look in the tanks and see the gas. Laugh if you will, but there were more people drowned in those tanks than you would believe. For that reason I have always tried to buy "white" or clear gas whenever possible. Anyone else heard of this ?