Apr 30, 2018 #11 K kayakag Newbie Joined Apr 30, 2018 Messages 1 Reaction score 0 Location Texas Do you have to drain the coolant from the heater core first, or is it empty when the engine is not running?
Do you have to drain the coolant from the heater core first, or is it empty when the engine is not running?
Apr 30, 2018 #12 sewlow Bitchin' Stitchin' Joined Jun 22, 2011 Messages 12,435 Reaction score 5,813 Location Abbotsford B.C., Canada. Drain the rad via the petcock on the bottom. There will be coolant in there even when the engine isn't running.
Drain the rad via the petcock on the bottom. There will be coolant in there even when the engine isn't running.