tonytav
Member
Hi guys, first year winterizing the 2005 280 twin 4.3s alpha 1 gen 2. My old 1984' I used to take out all four blue plugs, thermostat housing and fill block with antifreeze. 2005 seems to have one central valve on top of motor to drain blocks. I can not find any blue plugs. Is this the solution for draining the block? Would still like to remove thermostat housing and fill with antifreeze, does this make sense to everyone? Thanks ,Tony