Black Stone Labs Report - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 07-06-2011, 08:43 AM Thread Starter Rookie
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Black Stone Labs Report

I just had an oil analysis done by Blackstone Labs. This is the first oil change since having head studs, gasket and egr block done. Wanted to see if anyone have experience with this and see if coolant in oil is normal after the head studs. Just looking for any informed opinions. I had about 3,000 miles on the oil when it was changed and sent in. Replaced it with 5w40 syn. Have not noticed any coolant missing from dgas bottle. Thanks

Sodium and silicon likely point to small coolant leak. Your engine's bearing wear was a little higher than average (see lead). Chrome, from rings, also read high and that may indicate cloolant is coming from above, like head gasket. You mentioned recent work on that area, so maybe this is just residual and everything will improve nicely next time. Still, just be sure, we suggest 3,000 mile oil on your next oil and watching your coolant level.

Lead: 9
Antifreeze%: 0.12
Sodium: 60
Silicon: 18
Chromium: 7
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post #2 of 2 Old 07-06-2011, 08:53 AM
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It's completely normal to get some residual coolant and blowby while your headgaskets break in and fully seal. I wouldn't be concerned at all by this report considering it your first oil change since you head gasket job.

I'd only be concerned if the levels didn't drop or actually rise at your next oil change.

Did you have the heads and blocked checked for straightness and true by a machine shop? The Ford "technique" isn't the best by far for making sure the heads and block are flat.

~JW aka "Acidsniper"

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