by Wing on Mon, 26 Nov 2012 3:50 +0000
After unscrewing / removing that 3/8 bleeder, you top up coolant and the level will drop in 1-2 minutes, then add more coolant and so on. After the level no longer drops, top up the reservoir. If more than 8 L have been added, that's done. Drive the truck and check the level again 1-2 days later and top up. There is no need to bleed like some European cars which you need to let the air out from valves along with coolant lines.