Make/Model: Isuzu 6.6 Duramax LLY
Vehicle: 2004 Chevy 2500HD
Oil was changed at the time of this sample.
Code
OIL AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40
MILES IN USE 22,236 19,187 13,556 19,740 12,406 20,617
MILES ON UNIT 229,762 207,526 201,895 188,339 181,364 168,598
SAMPLE TAKEN 11/5/18 6/4/17 1/2/17 1/2/16 8/9/15 8/9/14
MAKE UP OIL 2 0 .75 1.25 .75 2
ALUMINUM 3 2 2 3 2 2
CHROMIUM 1 1 0 1 0 0
IRON 23 23 15 24 15 16
COPPER 4 5 3 7 4 4
LEAD 4 4 2 5 3 2
TIN 1 1 1 0 3 0
MOLYBDENUM 0 0 0 1 1 1
NICKEL 1 1 0 1 0 1
MANGANESE 0 0 0 0 0 0
SILVER 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0
POTASSIUM 2 3 2 4 3 7
BORON 2 1 1 7 2 7
SILICON 7 8 6 8 6 7
SODIUM 9 7 6 8 5 5
CALCIUM 3662 3537 3416 4075 3744 3729
MAGNESIUM 16 12 12 13 12 19
PHOSPHORUS 1210 1143 1113 1193 1137 1145
ZINC 1388 1315 1240 1535 1338 1384
BARIUM 0 0 0 0 0 1
SUS @ 210F 76.2 72.7 74.5 78.6 79.9 72.6
Visc @ 100C 14.57 13.66 14.12 15.17 15.5 13.63
Flashpoint 460 440 460 430 445 450
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 % 0.2 0.3 0.2 0.3 0.3 0.3
TBN 6.0 6.2 7.3 7.6 6.9
Blackstone Comments:
This oil was in place longer than any other sample on the page, yet wear metals are at similar levels as before. In fact, they're almost identical to what showed up last time, so there's no reason to think your Duramax is having any mechanical issues. Instead, it's wearing well and it didn't mind the longer interval at all, so feel free to use this interval again. Or, if you want to go even longer, the TBN shows plenty of active additive left in the oil at 6.0, so feel free to try 24K miles or so next. The oil was fine (physically) and no contamination was found. Very nice!
Vehicle: 2004 Chevy 2500HD
Oil was changed at the time of this sample.
Code
OIL AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40
MILES IN USE 22,236 19,187 13,556 19,740 12,406 20,617
MILES ON UNIT 229,762 207,526 201,895 188,339 181,364 168,598
SAMPLE TAKEN 11/5/18 6/4/17 1/2/17 1/2/16 8/9/15 8/9/14
MAKE UP OIL 2 0 .75 1.25 .75 2
ALUMINUM 3 2 2 3 2 2
CHROMIUM 1 1 0 1 0 0
IRON 23 23 15 24 15 16
COPPER 4 5 3 7 4 4
LEAD 4 4 2 5 3 2
TIN 1 1 1 0 3 0
MOLYBDENUM 0 0 0 1 1 1
NICKEL 1 1 0 1 0 1
MANGANESE 0 0 0 0 0 0
SILVER 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0
POTASSIUM 2 3 2 4 3 7
BORON 2 1 1 7 2 7
SILICON 7 8 6 8 6 7
SODIUM 9 7 6 8 5 5
CALCIUM 3662 3537 3416 4075 3744 3729
MAGNESIUM 16 12 12 13 12 19
PHOSPHORUS 1210 1143 1113 1193 1137 1145
ZINC 1388 1315 1240 1535 1338 1384
BARIUM 0 0 0 0 0 1
SUS @ 210F 76.2 72.7 74.5 78.6 79.9 72.6
Visc @ 100C 14.57 13.66 14.12 15.17 15.5 13.63
Flashpoint 460 440 460 430 445 450
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 % 0.2 0.3 0.2 0.3 0.3 0.3
TBN 6.0 6.2 7.3 7.6 6.9
Blackstone Comments:
This oil was in place longer than any other sample on the page, yet wear metals are at similar levels as before. In fact, they're almost identical to what showed up last time, so there's no reason to think your Duramax is having any mechanical issues. Instead, it's wearing well and it didn't mind the longer interval at all, so feel free to use this interval again. Or, if you want to go even longer, the TBN shows plenty of active additive left in the oil at 6.0, so feel free to try 24K miles or so next. The oil was fine (physically) and no contamination was found. Very nice!