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Potassium, Sodium in oil sample, no Glycol

2005 Detroit 14 Liter. I am getting elevated Potassium and Sodium in my oil sample with no glycol detected. I am adding a couple gallons of coolant between PMs, so I am pretty certain I have a coolant leak. But where? I have considered the EGR cooler, but the EGR tube is blocked and EGR valve disabled. Also thinking oil cooler. Any help would be greatly appreciated. Iam going home thisweekend and would like to fix myself.

Thanks, Austin

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Update: After pressure test, I found a small hot water leak that seems to be head or headgasket. If it was a liner, I think the sample would have glycol and/or water. Adding Lucas to help protect until repairs can be made.

Any advice or comments would help.

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Glad you found problem I figured it had to be in the head area

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Just cause you blocked off the EGR valve doesn't mean that there is no coolant going through EGR cooler unless you took the EGR cooler off. I would guess you have EGR cooler leaking and Detroit EGR cooler are real you know what. If you decide it is EGR cooler and your going to do it yourself I would consider a after market EGR cooler this one is all stainless steel tubing this place has them for Detroits also. Part number bostech EGR # 835

If that was oil cooler leaking that much coolant into the oil the oil would be discolored and be a milky looking color

http://www.shopinjectors.com/diesel/cumm...

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I re read your post I see you blocked the tube going over to the intake so then it would have to be somewhere in the head

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Let's hope not. I am going to check egr system very carefully before removing head. Thanks

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I've been told that if oil cooler is leaking,when you stop it will suck oil into the coolant.

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Not getting coolant in oil, just potassium and sodium.

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My “CASHcadia” has the same problem. My oil sample came back as follows:

All wear rates normal. Sodium and potassium levels indicate internal coolant leak. Water content acceptable. Viscosity within specified operating range. Action: Check for source of coolant leak and repair. As oil and filter(s) already changed, Resample at a reduced service interval to further monitor.

My engine is a Detroit DD-15 with only 32K on an inframe. Loosing 1/2 gallon coolant around 4000 miles. Removed EGR pipe (drivers side) and checked for moisture in pipe hoping it is a leaking EGR cooler, but pipe was dry with normal soot.

Praying it is not a cracked head or something major. This truck has robbed me and my family with repair bills. I call it a “CASHcadia” because it will take all your cash!!

Freightliner dealer did the inframe, and said head looked good, so did not replace it. Can’t imagine head gasket leaking at 32K miles…

Any suggestions?

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