whats the coldest youve been able ta start your truck with out being plugged in? here its gotten down ta 20 at night and i have a hard time startin truck

 

had my 02 for 6 years and never had it plugged in. starts everytime...got down to -15 last year for a week straight and still didnt have a problem. a little powerservice in the tank and shes been golden!

 

97 7.3 PSD started today @ 18 degrees with a single preheat, if it drops another 10 degrees I'll have to plug it in. I don't run fuel additives in this truck.
04 6.0 PSD starts at any temp without being plugged in. I run MC Cetane Boost in this truck.

 

i think my cold was beginning of this year it got down to around 20 ish at night for about a week

 

LOL acording to the current forcast (i didnt have a thermostat outside) it was 4*C (39*F) and it was the worst start yet havent had the truck through a winter yet the PO said it loved to be plugged in all year and i see why i might also need new glo plugs tho not sure...but ye ol detroit smoked and threw the truck around for a good 4 mins or so. needless to saw ill have to bring my cord with me next time i leave my truck out when i leave it somewhere cause im to to drive

 

either last yr or the yr before it was -50 by windchill and a N wind. my truck sat out in the lot at work facing north witht he wind blowing straight into the grill for 10hrs. it turned over a little slow but she fired right up

 

couple years ago -43f not able to plug in so I cycled the grid heater 2x and it did fire up but rough as hell...................i thought the piston were swappin holes or sumpin

 

Its been down to single digits this year so far with wind chills even lower and mine has never been plugged in and only takes one heat cycle.

 

I dont have the grid heater hooked up on mine and 20* didnt even seem to phase it. Ran a little rough at first, but smoothed right out.

To the OP, you might need new glow plugs. A powerstroke's not ever gonna start as easy as a 12v, but 20* still shouldnt be too bad.

 

In 20's some nights no problem