coolant out of the degas cap

[samsdad02]

Noticed a coolant smell the other day. Found white residue around on and around the degas cap and some on the bottle. Nothing but oil on the dipstick. Haven't seen a lot on failing head gaskets on these motors.

2014 2500 6.4 hemi. Last summer/fall I flushed the heater core, replaced water pump, thermostat, a bunch of hoses including the egr hoses, fan clutch, belt, tensioner, idler pulleys, degas cap. Also added a bypass coolant filter. radiator was replaced 2 years ago.

Also monitor temps with a scan gage 2. The coolant temp has fluctuated since I bought it 2 years ago. Before the above listed repairs the temp would rise to 230*ish and drop to low 180*. Since the repairs it rises to mid to high 220* and drops to low 190*. Ambient temp or driving situation has no effect.

The cap was bought at the local Ram dealer. Most everything else was a brand name from Rock auto.

Looking for direction and or suggestions. Thank you.

 

[mtofell]

Found white residue around on and around the degas cap and some on the bottle.

Any chance you mixed HOAT and OAT coolant? Mixing can result in what you are describing.

 

[samsdad02]

Honestly not sure. It had the pinkish purpley stuff in it when I did the repairs. I used the purple labeled oat stuff the local parts store had the says it for Ram. If I remember right, I replaced all the coolant but only flushed the heater core, not the radiator or block.

 

[crash68]

Found white residue around on and around the degas cap and some on the bottle.

There have been a few EcoDiesels over the years that the owners have had to replace the degas bottle for them leaking around the neck.

 

[samsdad02]

There have been a few EcoDiesels over the years that the owners have had to replace the degas bottle for them leaking around the neck.

have to look at that. It could be the original tank.