Draining and Filling Cooling System

WARNING: DO NOT REMOVE CYLINDER BLOCK DRAIN PLUGS OR LOOSEN RADIATOR DRAINCOCK WITH SYSTEM HOT AND UNDER PRESSURE. SERIOUS BURNS FROM COOLANT CAN OCCUR.

DO NOT WASTE reusable coolant. If solution is clean, drain coolant into a clean container for reuse.


DRAINING
1. Remove radiator pressure cap.
2. Loosen radiator petcock.














3. Remove cylinder block drain plugs.


REFILLING, EXCEPT 4.7L ENGINE

NOTE: This procedure does not apply to the 4.7L engine.

Clean cooling system prior to refilling.
1. Install cylinder block drain plugs. Coat the threads with Mopar Thread Sealant with Teflon.
2. Close radiator petcock.
3. Fill cooling system with a 50/50 mixture of water and antifreeze. Be sure that antifreeze contains Alugard 340-2.
4. Fill coolant reserve/overflow tank to FULL mark on indicator stick.
5. Start and operate engine until thermostat opens (upper radiator hose warm to touch).
6. If necessary, add a 50/50 water and antifreeze mixture to the coolant reserve/overflow tank. This is done to maintain coolant level between the FULL and ADD marks. The level in the reserve/overflow tank may drop below the ADD mark after three or four warm-up and cool-down cycles.


REFILLING 4.7L ENGINE

CAUTION: Failure to follow the procedure outlined below, can result in engine overheating conditions and sever damage to engine.

1. Tighten the radiator draincock and the cylinder block drain plug(s) (if removed).
2. Fill system using a 50/50 mixture of ethylene glycol antifreeze and low mineral content water.
3. Fill coolant reservoir to FULL mark.
4. Install radiator cap and reservoir cap.
5. Start engine and run at 3000 RPM for 10 seconds.
6. Shut engine off.
7. Remove radiator cap.
8. Fill radiator to full level.
9. Install the radiator cap.