i just got back a oil; report of 20 on potassium and it should be 11 they said the new egr some times runs up the sample but where could a new 07 5.9 with 13,000 miles be getting coolant from any thoughts
thanks

 

post up the whole report if you can...

 

Here is my report. Review it and let me know your opinion.

 

Wait a minute on deciding on what to do. I had a simular problem last year.It appeard that there was an increased precentanged of potassium. Then, it suddenly changed to normal. I have been sending a sample after 4000 miles and change the oil at 7500 miles since. Now after two samples later, no problems. I believe it must have been from the sampling hose. (sorry for any spelling i do not have my normal spelling check on this computer )

 

My 07 5.9 currently has 26000 miles. Oil samples taken every 5000 and my lowest potassium was 0 and my highest was 7. Most were 5,6's.

 

Well being a 5.9 you don't have a cooled EGR, so that rules that idea out... I am disappointed they even mentioned it, IMHO they should know more about the engines if they want to make comments like that...

 

Three oil samples at $30 or so dollars a pop. Way to serious about oil. Run her out to about 10,000 miles and check for significant abnormal material in sample. Believe potassium is a oil additive to start with, not from something in engine, keep er rolling is what sample says to me.

 

Yes, Rotella I believe uses it as an additive. The way I look at it is $30 is cheaper than 12,000 bucks for a new engine. If you are having a serious problem, it does NOT take long for it to ruin something. For example, Fuel dilution. Or if you have a little fuel dilution at 5,000 it might help you see a problem WAY IN ADVANCE of it becomming to serious when the injector fully fails and fills the crank with diesel. I have no problem spending the 25.00 bucks every few months...