Make/Model: Isuzu 6.6 Duramax LLY
Vehicle: 2004 Chevy 2500HD
Oil was changed at the time of this sample. I haven't posted in a while, looks like something changed as I can't get the format to look any better than this. Sorry.
Blackstone Comments:
Steady does it for your Duramax. You kept this oil in use a little longer than last time and wear metals hardly changed. That suggests internal parts are wearing as they should and the longer interval didn't bother them one bit. No air or oil filtration problems are suspected, and we didn't find any fuel or water to note. The TBN shows lots of active additive remaining in the oil so try going 26-27K miles if you'd like. Based on the established trend, we won't be surprised if your Duramax handles that interval really well. Keep up the good work with your 6.6L. It looks great!
Vehicle: 2004 Chevy 2500HD
Oil was changed at the time of this sample. I haven't posted in a while, looks like something changed as I can't get the format to look any better than this. Sorry.
Code:
OIL AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40
MILES IN USE 24,087 22,236 19,187 13,556 19,740 12,406
MILES ON UNIT 253,849 229,762 207,526 201,895 188,339 181,364
SAMPLE TAKEN 8/3/20 11/5/18 6/4/17 1/2/17 1/2/16 8/9/15
MAKE UP OIL 1.5 2 0 .75 1.25 .75
ALUMINUM 3 3 2 2 3 2
CHROMIUM 1 1 1 0 1 0
IRON 22 23 23 15 24 15
COPPER 4 4 5 3 7 4
LEAD 2 4 4 2 5 3
TIN 1 1 1 1 0 3
MOLYBDENUM 0 0 0 0 1 1
NICKEL 0 1 1 0 1 0
MANGANESE 0 0 0 0 0 0
SILVER 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0
POTASSIUM 3 2 3 2 4 3
BORON 1 2 1 1 7 2
SILICON 7 7 8 6 8 6
SODIUM 8 9 7 6 8 5
CALCIUM 3845 3662 3537 3416 4075 3744
MAGNESIUM 14 16 12 12 13 12
PHOSPHORUS 1212 1210 1143 1113 1193 1137
ZINC 1434 1388 1315 1240 1535 1338
BARIUM 0 0 0 0 0 0
SUS @ 210F 78.9 76.2 72.7 74.5 78.6 79.9
Visc @ 100C 15.24 14.57 13.66 14.12 15.17 15.5
Flashpoint 470 460 440 460 430 445
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 0.2 0.3 0.3
TBN 5.5 6.0 6.2 7.3 7.6Blackstone Comments:
Steady does it for your Duramax. You kept this oil in use a little longer than last time and wear metals hardly changed. That suggests internal parts are wearing as they should and the longer interval didn't bother them one bit. No air or oil filtration problems are suspected, and we didn't find any fuel or water to note. The TBN shows lots of active additive remaining in the oil so try going 26-27K miles if you'd like. Based on the established trend, we won't be surprised if your Duramax handles that interval really well. Keep up the good work with your 6.6L. It looks great!
