Have a 2001 1500 conversion van/123k miles/5.9lt and the water in the radiator is disappearing. Ran it for about 20mins. on the driveway, crawled under it, checked the oil stick, turned on the heater, and everything is dry.
What am missing ?
This forum has been a big help to me in the past and I really appreciate everyone who puts in their suggestions.
Thanks/Jim

 

Could be going out the tailpipe.

Did you overheat? This can blow a headgasket or crack a head.

My radiator seeps, but the drops only make it to asphalt after sitting 8+ hours, and I have not had to add coolant in a long time.

 

If the head is not cracked, then the plenum may have a leak causing the coolant to run through the intake and out the exhaust.

The plenum can be inspected by taking the air-cleaner housing off, shining a flash light down the TB barrels and looking for any puddles or spots.

 

Could try a new Radiator cap!

How quickly is it losing water, daily, weekly, Monthly.

How are you RAD hoses are they collapsed of still holding form.