What does everyone do?

Me... I usually add Stanadyne Performance Formula every other tank when temps get below freezing. With the low predicted for like 7 tonight, I wil probably set the plug in timer to come on at about 4am tomorrow morning too to warm things up for a couple of hours. Usually 10* is where I start thinking about plugging it in.

Some guys say they never add anything and never plug their trucks in and never had a problem. My luck just never seems to work that way....