Do you recommend turning system off? No, I like to cut my times down to a minimum in cold weather and just let the system flush itself. Don’t drive your car for three months and see how it runs when you try to start it. By Bill D|2019-04-21T21:08:45+00:00April 21st, 2019| Share This Story, Choose Your Platform! FacebookTwitterLinkedInWhatsAppPinterestEmail Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment.