I'VE HAD MY 2001 RAM NOW FOR 5 MONTHS NOW AND LIVE IN DENVER WHERE IT CAN GET DOWN TO 30 BELOW, BUT NOT USUALLY FOR LONG. I WOULD LIKE TO UNDERSTAND BETTER WHAT I AM PUTTING INTO THE TANK. MOST DENVER STATIONS THAT CARRY DIESEL, REFER TO IT AS PREMIUM DIESEL AND COLLECT A FAT PRICE. TRUCK STOPS ARE NOT EASILY ACCESSIBLE BUT WHEN I GET TO THEM THEY NORMALLY HAVE #1 AND #2 SO IF I EXPECT COLD WEATHER, I CAN MIX 50/50. IS THAT WHAT I SHOULD BE DOING AND WHAT AM I GETTING WHEN I BUY "PREMIUM DIESEL" CAN I CALL THE STATION OWNERS AND EXPECT A STRAIGHT ANSWER? I CARRY A 96 ONCE CONTAINER OF POWER SERVICE ADDITIVE WITH ME BUT DON'T WANT TO GET STRANDED WITH A GELLED TANK. YOU CAN TELL I AM NEW AT THIS BUT JUST NEED A LITTLE GUIDANCE, THANKS FOR YOUR HELP. JOHN SKALET DENVER COLO