|
Sue,
I usually plug my Duramax in when temps drop below 30 degrees. I have been down as far as -23 without being able to plug it in and the truck started all 3 weeks I was in those temps. As mentioned above it does help starting in the morning, also remember to be using "winter" diesel at the pumps for those of us who are up north. This will also help with the "gel" that happens in colder temps.
|