__. The "amount" of winterization and the dates when it's brought in and the dates when it's phased out all vary by climate zones. Somebody once posted a link that shows the info in detail but I can't find it now. But it's out there.bestmapman said:Does anyone know when winter diesel changes over to summer diesel. It may vary from area to area.
__. Most years, I go to visit my brother on his birthday, up near Charlotte. I fill up near the coast, drive there, then head to Alexandria VA -- highway mileage is about 600 miles. I find that the mileage on these trips is consistently 3-5 MPG which stays up after that through the spring. Since "untreated" diesel should be good to down around 20 degrees F, then it would seem to me that mid-March is good down on the coast. But this is purely "seat of the pants" feel for what's seemed to happen to me over the past 6 years.coolbreeze said:Mr gutwrench , any idea on the switchover in NC?