This oil is tough stuff. I had many hard accelerations in these 8,000 miles. Lots and Lots of highway traffic.
Black Stone Comments
The multitude of highway miles have treated your engine right. This oil was run about 1,200 miles longer than the previous fill, yet wear changed very little and even improved at iron. That's a good sign that no problems are developing and since the TBN was still okay at 2.0, we think your could have even gone longer. Insolubles were fine at 0.3%, so the oil filter was doing a nice job at keeping up with oil oxidation and blow-by. Still no fuel dilution or anti-freeze present. Try going up to 9,000 miles on the next oil if you are on the highway a lot, else go 8,500 miles.
Data
Oil Brand---------PP--------PP--------PP--------PP--------PP--------PP
Oil Vis-----------5w/20-----5w/20-----5w/20-----5w/20-----5w/20-----5w/20
Oil Filter--------Wix-------Wix-------Wix-------Wix-------Wix-------Wix
MI/HR-ON-OIL------8,077-----6,831-----7,187-----6,864-----5,787-----5,232
MI/HR-ON-UNIT-----71,897----63,820----56,989----49,802----42,938----37,151
SAMPLE-DATE-------09/05/08--06/01/08--02/24/08--11/18/07--09/28/07--07/18/07
ALUMINUM----------2---------1---------2---------2---------2---------1
CHROMIUM----------1---------1---------1---------1---------1---------1
IRON--------------10--------11--------13--------7---------9---------12
COPPER------------19--------15--------15--------19--------24--------25
LEAD--------------1---------1---------1---------1---------0---------0
TIN---------------0---------0---------0---------0---------0---------0
MOLYBDENUM--------49--------55--------47--------50--------53--------52
NICKEL------------0---------1---------1---------1---------0---------0
MANGANESE---------0---------0---------0---------0---------0---------0
SILVER------------0---------0---------0---------0---------0---------0
TITANIUM----------0---------0---------0---------0---------0---------0
POTASSIUM---------3---------1---------0---------2---------1---------1
BORON-------------25--------34--------28--------28--------28--------31
SILICON-----------10--------8---------8---------7---------7---------7
SODIUM------------7---------6---------7---------5---------8---------8
CALCIUM-----------3074------3270------3310------2911------2965------2773
MAGNESIUM---------15--------14--------12--------14--------18--------11
PHOSPHORUS--------680-------715-------664-------652-------651-------617
ZINC--------------827-------885-------811-------794-------793-------750
BARIUM------------0---------0---------0---------0---------0---------0
SUS-VIS@210F------54.7------53.5------52.0------54.0------55.1------53.1
cSt-VIS@100c------8.96------8.32------7.89------8.49------8.79------8.20
FLASHPOINT-IN-F---410-------410-------385-------390-------405-------410
FUEL%------------- ANTIFREEZE%-------0.0-------0.0-------0.0-------0.0-------0.0-------0.0
WATER%------------0.0-------0.0-------0.0-------0.0-------0.0-------0.0
INSOLUBLES%-------0.3-------0.2-------0.3-------0.3-------0.3-------0.2
TBN---------------2.0-------3.4-------3.3-------4.7-------5.3-------3.7
Black Stone Comments
The multitude of highway miles have treated your engine right. This oil was run about 1,200 miles longer than the previous fill, yet wear changed very little and even improved at iron. That's a good sign that no problems are developing and since the TBN was still okay at 2.0, we think your could have even gone longer. Insolubles were fine at 0.3%, so the oil filter was doing a nice job at keeping up with oil oxidation and blow-by. Still no fuel dilution or anti-freeze present. Try going up to 9,000 miles on the next oil if you are on the highway a lot, else go 8,500 miles.
Data
Oil Brand---------PP--------PP--------PP--------PP--------PP--------PP
Oil Vis-----------5w/20-----5w/20-----5w/20-----5w/20-----5w/20-----5w/20
Oil Filter--------Wix-------Wix-------Wix-------Wix-------Wix-------Wix
MI/HR-ON-OIL------8,077-----6,831-----7,187-----6,864-----5,787-----5,232
MI/HR-ON-UNIT-----71,897----63,820----56,989----49,802----42,938----37,151
SAMPLE-DATE-------09/05/08--06/01/08--02/24/08--11/18/07--09/28/07--07/18/07
ALUMINUM----------2---------1---------2---------2---------2---------1
CHROMIUM----------1---------1---------1---------1---------1---------1
IRON--------------10--------11--------13--------7---------9---------12
COPPER------------19--------15--------15--------19--------24--------25
LEAD--------------1---------1---------1---------1---------0---------0
TIN---------------0---------0---------0---------0---------0---------0
MOLYBDENUM--------49--------55--------47--------50--------53--------52
NICKEL------------0---------1---------1---------1---------0---------0
MANGANESE---------0---------0---------0---------0---------0---------0
SILVER------------0---------0---------0---------0---------0---------0
TITANIUM----------0---------0---------0---------0---------0---------0
POTASSIUM---------3---------1---------0---------2---------1---------1
BORON-------------25--------34--------28--------28--------28--------31
SILICON-----------10--------8---------8---------7---------7---------7
SODIUM------------7---------6---------7---------5---------8---------8
CALCIUM-----------3074------3270------3310------2911------2965------2773
MAGNESIUM---------15--------14--------12--------14--------18--------11
PHOSPHORUS--------680-------715-------664-------652-------651-------617
ZINC--------------827-------885-------811-------794-------793-------750
BARIUM------------0---------0---------0---------0---------0---------0
SUS-VIS@210F------54.7------53.5------52.0------54.0------55.1------53.1
cSt-VIS@100c------8.96------8.32------7.89------8.49------8.79------8.20
FLASHPOINT-IN-F---410-------410-------385-------390-------405-------410
FUEL%------------- ANTIFREEZE%-------0.0-------0.0-------0.0-------0.0-------0.0-------0.0
WATER%------------0.0-------0.0-------0.0-------0.0-------0.0-------0.0
INSOLUBLES%-------0.3-------0.2-------0.3-------0.3-------0.3-------0.2
TBN---------------2.0-------3.4-------3.3-------4.7-------5.3-------3.7