Engine/Transmission (1998.5 - 2002) Drain coolant

[overbuiltcustoms]

What is the best way to drain coolant and refill. Is there a drain plug on the engine to completly drain all the old coolant out?

Thanks in advance.

 

[aircop]

Only drain I've ever seen is the one on the radiator.

 

[THoltz]

Copied from CumminsDatabase.com -



"From Steve St. Laurent :



Here's how I did mine and I got approximately 5. 5 gallons into the system, first I opened the petcock on the radiator (turn it, then pull on it a little, turn, pull, turn, pull - until it starts draining), that will drain the fluid out of the overflow bottle, once the overflow bottle is empty then take the radiator cap off. Now pull the hose connector off the top of the engine and remove the thermostat. Once it stops draining, pour distilled water into both the inside and outside holes in the thermostat hole until you see clear water flowing out of the radiator. Now pour in straight 100% coolant into those same two holes until you see coolant running out the radiator. Close the radiator petcock. Some of the water and some of the 100% coolant will be trapped in the system - should be around 50/50. Now pour in either pre-mix or mix 50% coolant with 50% distilled water in through the thermostat hole until the system is as full as you can get it. Then put the new thermostat in and the top radiator hose connector. Finish filling the radiator with the mix, close the radiator cap and then fill the overflow bottle. Run the truck until it's warmed up (so the thermostat opens) and then check the overflow bottle again.



Using this method I was able to get in approximately 5. 5 gallons (actually poured in more than that but some of it pours out) and I didn't have any problems with trapped air because I was backfilling the system from the engine to the radiator. You want to use distilled water only so you don't get mineral deposits in your coolant system.