Forgot I had this sitting around, figured I'd share. The run of oil before this was a 2700 mi run of AutoZone 5W-30 after the 2nd Auto-RX Rinse (2500 runs). This run below was in service 5.5 months and I have a nice Ford 4.0L SOHC timing chain rattle, so I'm sure some of the wear of it is contributing to the numbers below.
Code:
Comments: CHARLES: It's funny how much oil carries over from oil change to oil change. Check out sodium - that was
an additive in the AutoZone you used last time. Mobil 1 doesn't use it, but there's still 117 ppm present.
That's fine - it'll wash out with time if you stick with this oil. Note that wear has increased, and that's primarily
due, we think, to the longer oil change. Unless you know of some kind of operational issue (harder use like
towing, for example) that would have caused an increase in wear, you may have found the limit on how long
you want to run the oil. The TBN is still solid.
MI/HR on Oil 4,980
MI/HR on Unit 214,644
Sample Date 10/25/2015
Make Up Oil Added 0.0
ALUMINUM 7
CHROMIUM 1
IRON 13
COPPER 11
LEAD 1
TIN 1
MOLYBDENUM 60
NICKEL 1
MANGANESE 0
SILVER 0
TITANIUM 0
POTASSIUM 3
BORON 121
SILICON 12
SODIUM 117
CALCIUM 1590
MAGNESIUM 15
PHOSPHORUS 684
ZINC 860
BARIUM 0
cSt Viscosity @ 100°C 67.8
SUS Viscosity @ 210°F 12.37
Flashpoint in °F 410
Fuel %
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.1
TBN 3.3
TAN
ISO Code
Chuck
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Comments: CHARLES: It's funny how much oil carries over from oil change to oil change. Check out sodium - that was
an additive in the AutoZone you used last time. Mobil 1 doesn't use it, but there's still 117 ppm present.
That's fine - it'll wash out with time if you stick with this oil. Note that wear has increased, and that's primarily
due, we think, to the longer oil change. Unless you know of some kind of operational issue (harder use like
towing, for example) that would have caused an increase in wear, you may have found the limit on how long
you want to run the oil. The TBN is still solid.
MI/HR on Oil 4,980
MI/HR on Unit 214,644
Sample Date 10/25/2015
Make Up Oil Added 0.0
ALUMINUM 7
CHROMIUM 1
IRON 13
COPPER 11
LEAD 1
TIN 1
MOLYBDENUM 60
NICKEL 1
MANGANESE 0
SILVER 0
TITANIUM 0
POTASSIUM 3
BORON 121
SILICON 12
SODIUM 117
CALCIUM 1590
MAGNESIUM 15
PHOSPHORUS 684
ZINC 860
BARIUM 0
cSt Viscosity @ 100°C 67.8
SUS Viscosity @ 210°F 12.37
Flashpoint in °F 410
Fuel %
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.1
TBN 3.3
TAN
ISO Code
Chuck
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