Can anyone tell me what a
Lund cold front is?

Never heard of it.
Last year, we saw it hit -23 here in Nebraska, so anything I can do to help keep some heat would be great.
Also, my FEH 4WD now has nearly 5000 miles and is doing great. I expected to see a major drop in mileage now that we have colder weather but I'm still seeing about 30mpg average (50 city/50 hwy).
Dick Day