Morning all, here is what's been happening. Tuesday got up started the truck around 0530 idle was a little ruff then smoothed out. I didn't have to work so I shut her down about 0600. Got called in about 0730 and went to start the truck idle was ruff again then died and would not start. I checked my in fuel filter and the fuel was gelled it was about -10F. The tank was 3/4 full no additive, didn't have any last time I filled up. That night put in PS 911 in the fuel filter and in the tank still wouldn't start. Wensday another bottle of 911 changed the factory fuel filter and put in more 911. Still no start, got the wife to turn her over and I started bleeding the injectors. Then she finally lit off. Idle was ruff and smoothed out. Drove around town to warm her up good and put in PS (white bottle) usually run the gray bottle. The wife drove her last night about 70 miles. I figuered the additive should be good and mixed. She got home about 2 am and it was about -4 outside. I went to start her this morning at 0600 and she started, idle was ruff then died again#@$%! I have a BD inline pump and still read 20psi when cranking. Oh and the heater won't warm up. Don't know if it is the weather or what. Any help? Please!