This was mostly highway miles so I did expect the numbers to improve over the previous runs. I'm still surprised that I'm not getting more miles out of the oil though. I can't tell if the limitation is the oil, the GM 5.3, or my specific engine...
Oil and filter were not changed, will continue to extend this one out.
Make/Model: GM 5.3L V-8
Vehicle: 2004 Chevy Tahoe
Code:
OIL Ams SS Ams SS 5w30 Ams SS 5w30 Ams SS 5w30 Ams SS 5W30 Ams SS 5w30 Ams SS 5w30 Unknown 5w30
MILES IN USE 7,990 11,843 8,231 10,040 9,245 7,002 5,086 3,097
MILES ON UNIT 161,560 153,570 149,958 141,600 131,560 129,317 127,401 122,315
SAMPLE TAKEN 12/18/13 8/4/13 5/5/13 9/3/12 11/13/11 9/13/11 7/30/11 4/25/11
MAKE UP OIL 0 0 .25 0 0 0 0 0
ALUMINUM 5 5 3 4 3 3 3 3
CHROMIUM 0 1 0 1 1 0 0 1
IRON 15 25 15 18 16 11 12 19
COPPER 14 20 16 21 18 16 14 16
LEAD 12 59 13 48 16 10 7 14
TIN 0 1 0 5 0 1 2 0
MOLYBDENUM 132 143 134 140 149 130 146 18
NICKEL 1 1 0 1 1 0 0 1
MANGANESE 1 1 0 1 1 1 1 1
SILVER 0 0 0 0 0 0 0 0
TITANIUM 0 0 0 0 1 1 1 6
POTASSIUM 2 3 3 5 0 2 4 0
BORON 54 50 62 48 52 65 104 8
SILICON 25 40 26 38 46 38 33 30
SODIUM 10 18 14 26 67 61 57 212
CALCIUM 3072 3404 3258 3252 3588 3270 3332 1694
MAGNESIUM 13 15 14 14 15 14 15 12
PHOSPHORUS 661 640 637 535 733 750 756 667
ZINC 692 726 715 616 840 932 958 806
BARIUM 0 0 0 0 0 0 0 0
CADMIUM 0
VANADIUM 0
ANTIMONY 0
LITHIUM 0
SUS @ 210F 62.2 65.3 62.1 62.3 59.1 61.4 57.3
Visc @ 100C 10.84 11.68 11.0 10.82 10.86 9.96 10.62 9.45
Flashpoint 420 440 435 435 435 415 390
Fuel %
Antifreeze % 0.0 0.0 ? ? 0.0 0.0 0.0
Water % 0.0 0.0
Insolubles % 0.3 0.3 0.2 0.3 0.3 0.2 0.4
TBN 2.8 1.1 3.36 1.9
Soot %
Oxidation 54
Nitration 15
Blackstone Inc Comments:
You have gone just about 8,000 miles on this latest oil so far, and bearing wear is looking much, much better. The other wear metals look good too, and silicon is at its lowest level on the page. These are some excellent improvements -- maybe all those highway miles helped keep metals down. Highway miles are pretty easy miles for engines. The viscosity was in the correct range for a 5W/30 oil, and no fuel, moisture, or coolant was found. Insolubles are good at 0.3%, and the TBN shows lots of active additive left. Put another 1,500 miles on this oil and resample.
Oil and filter were not changed, will continue to extend this one out.
Make/Model: GM 5.3L V-8
Vehicle: 2004 Chevy Tahoe
Code:
OIL Ams SS Ams SS 5w30 Ams SS 5w30 Ams SS 5w30 Ams SS 5W30 Ams SS 5w30 Ams SS 5w30 Unknown 5w30
MILES IN USE 7,990 11,843 8,231 10,040 9,245 7,002 5,086 3,097
MILES ON UNIT 161,560 153,570 149,958 141,600 131,560 129,317 127,401 122,315
SAMPLE TAKEN 12/18/13 8/4/13 5/5/13 9/3/12 11/13/11 9/13/11 7/30/11 4/25/11
MAKE UP OIL 0 0 .25 0 0 0 0 0
ALUMINUM 5 5 3 4 3 3 3 3
CHROMIUM 0 1 0 1 1 0 0 1
IRON 15 25 15 18 16 11 12 19
COPPER 14 20 16 21 18 16 14 16
LEAD 12 59 13 48 16 10 7 14
TIN 0 1 0 5 0 1 2 0
MOLYBDENUM 132 143 134 140 149 130 146 18
NICKEL 1 1 0 1 1 0 0 1
MANGANESE 1 1 0 1 1 1 1 1
SILVER 0 0 0 0 0 0 0 0
TITANIUM 0 0 0 0 1 1 1 6
POTASSIUM 2 3 3 5 0 2 4 0
BORON 54 50 62 48 52 65 104 8
SILICON 25 40 26 38 46 38 33 30
SODIUM 10 18 14 26 67 61 57 212
CALCIUM 3072 3404 3258 3252 3588 3270 3332 1694
MAGNESIUM 13 15 14 14 15 14 15 12
PHOSPHORUS 661 640 637 535 733 750 756 667
ZINC 692 726 715 616 840 932 958 806
BARIUM 0 0 0 0 0 0 0 0
CADMIUM 0
VANADIUM 0
ANTIMONY 0
LITHIUM 0
SUS @ 210F 62.2 65.3 62.1 62.3 59.1 61.4 57.3
Visc @ 100C 10.84 11.68 11.0 10.82 10.86 9.96 10.62 9.45
Flashpoint 420 440 435 435 435 415 390
Fuel %
Antifreeze % 0.0 0.0 ? ? 0.0 0.0 0.0
Water % 0.0 0.0
Insolubles % 0.3 0.3 0.2 0.3 0.3 0.2 0.4
TBN 2.8 1.1 3.36 1.9
Soot %
Oxidation 54
Nitration 15
Blackstone Inc Comments:
You have gone just about 8,000 miles on this latest oil so far, and bearing wear is looking much, much better. The other wear metals look good too, and silicon is at its lowest level on the page. These are some excellent improvements -- maybe all those highway miles helped keep metals down. Highway miles are pretty easy miles for engines. The viscosity was in the correct range for a 5W/30 oil, and no fuel, moisture, or coolant was found. Insolubles are good at 0.3%, and the TBN shows lots of active additive left. Put another 1,500 miles on this oil and resample.
