2nd OA with possible coolant. HELP!!

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Mar 27, 2013 | 07:54 PM

dmueller71

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Laughing Gas

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From: Mazon, IL

2nd OA with possible coolant. HELP!!

OK, My last OA showed signs of coolant. Iron 25 and Potassium 40. I had hoped that since I changed the oil cooler O rings about 30,000 or so ago, that there was a little residual coolant in the iol. The new OA came in with 5000 miles on the new Amsoil. Iron is up to 34, but potassium is down to 21. (still high, but better). My question is this. Where could I be getting coolant from? Obviously it's not a lot (yet), but it definitely concerns me. Any ideas? Could the oil cooler be leaking internally? There isn't any leakage on the outside of it.

Mar 27, 2013 | 07:57 PM

white Buffalo

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From: Sioux Falls, SD

Dan,

can you post up you UOA report so we can get the complete picture.....

Mar 27, 2013 | 08:03 PM

white Buffalo

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From: Sioux Falls, SD

increasing levels of sodium and potassium may be an indication of antifreeze, but the best way to determine if there is to have the UOA sample tested for sntifreeze.

Mar 28, 2013 | 06:29 PM

dmueller71

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Laughing Gas

Joined: Jan 2005

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From: Mazon, IL

<table class="MsoNormalTable" style="margin-left

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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 10.7pt" valign="top" width="72"> 5,400
</td> </tr> <tr style="mso-yfti-irow:1;height:11.4pt"> <td style="width:63.0pt;padding:0in 0in 0in 0in; height:11.4pt" valign="top" width="126"> MI/HR on Unit
</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 310,379
</td> </tr> <tr style="mso-yfti-irow:2;height:11.4pt"> <td style="width:63.0pt;padding:0in 0in 0in 0in; height:11.4pt" valign="top" width="126"> Sample Date
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 0 qts
</td> </tr> <tr style="mso-yfti-irow:4;height:11.4pt"> <td style="width:63.0pt;padding:0in 0in 0in 0in; height:11.4pt" valign="top" width="126">
</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72">
</td> </tr> <tr style="mso-yfti-irow:5;height:11.4pt"> <td style="width:63.0pt;padding:0in 0in 0in 0in; height:11.4pt" valign="top" width="126"> ALUMINUM
</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 3
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 34
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 2
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;height:11.4pt"> <td style="width:63.0pt;padding:0in 0in 0in 0in; height:11.4pt" valign="top" width="126"> LEAD
</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 6
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 0
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 2
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 1
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 0
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 8
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</td> <td style="width:.5in;padding:0in 0in 0in 0in;height: 11.4pt" valign="top" width="72"> 3715
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Mar 28, 2013 | 06:31 PM

dmueller71

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Laughing Gas

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From: Mazon, IL

Since I haven't had the extra $25 to sponsor yet this year, I can't post any pics pr files. so I had to condense it as much as possible on Word.

Mar 28, 2013 | 06:31 PM

dmueller71

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Laughing Gas

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From: Mazon, IL

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<tbody><tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes;height:11.35pt"><td style="width

SUS Viscosity @ 210°F
</td> <td style="width:54.3pt;padding:0in 0in 0in 0in; height:11.35pt" valign="top" width="109">

70.4
</td> </tr> <tr style="mso-yfti-irow:1;height:11.65pt"> <td style="width

cSt Viscosity @ 100°C
</td> <td style="width:54.3pt;padding:0in 0in 0in 0in; height:11.65pt" valign="top" width="109"> 13.05
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Flashpoint in °F
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450

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Fuel %
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Antifreeze %
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Water %
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0.0

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Insolubles %
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0.3

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TBN
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7.7

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Mar 29, 2013 | 07:37 AM

white Buffalo

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From: Sioux Falls, SD

Dan,

Bottom line is - your oil analysis is fine.

1. Iron at 34 ppm. Yeah its a tad higher than your previous sample but it is not close to the abnormal level yet. Although many 7.3L's will show about 17-25 ppm on a 5,000 mile oil sample yours is not at the abnormal level which Navistar considers to be 100 ppm (according to the lab at Schaeffer Oil). A temporary elevation in Iron seen on a UOA report can be the result from any engine work or a change in oil brand. Is this your first run on Amsoil? I do see some diluted additive levels in this sample that are normally not seen in Amsoil's diesel oil (Molybdenum). If it is - this can explain the elevated iron level and it is temporary. CAT did a paper on this and I there has been some articles about it in lubrication publications.

Here is the backside of a Schaeffer's UOA report that might explain some of your data and clear up the mud.

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Mar 29, 2013 | 07:49 AM

white Buffalo

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Joined: Sep 2006

Posts: 7,426

Likes: 6

From: Sioux Falls, SD

2. increasing levels of Potassium and Sodium can be an indication of antifreeze. Keep in mind that the lab is not as concerned about the absolute value (40 ppm, 25 ppm, etc) as they are about the trend. If the levels are increasing then there could be a problem, if they are decreasing then just watch your UOA's and the level should continue to drop. Your level dropped 50% - that's a good thing. IF you are concerned about coolant see if the lab would be willing to test it for antifreeze, not just for potassium and sodium.

Mar 29, 2013 | 07:56 AM

#10

white Buffalo

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From: Sioux Falls, SD

Your viscosity is still in the 15W-40 range (13.05 @ 100 deg C). Do you happen to have oxidation and nitration numbers? Oxidation levels give you a better indication of the "oil's life/serviceability". The last time I checked Amsoil included these on there reports or did you have a different lab do the UOA?

Silicon levels are nice and low at 3ppm so your air filtration system is doing an excellent job. No water in the sample and the additive level (TBN) looks good.

Hope this info helped clear up the mud and have you not worry about chasing numbers on a UOA report.

Mar 29, 2013 | 08:24 AM

#11

dmueller71

Thread Starter

Laughing Gas

Joined: Jan 2005

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From: Mazon, IL

The previous tests at 305k and 232k. Show iron at 25 and 14 respectively.
Potassium was 40 and 5. I've always had Blackstone run the OA.
I think I'm going to leave it through the weekend trip and change it Monday and test again. Thanks so much for the input.