Went ahead and changed the oil & filter at exactly one year. Pulled much more over this year than any previous, and also moved closer to work so short trips were much more frequent. Dmax didn't seem to mind either
Make/Model: Isuzu 6.6 Duramax LLY
Vehicle: 2004 Chevy 2500HD
Blackstone comments:
You must be doing all the right things with this Duramax because you've got another fantastic report here after 20,617 miles of use on the oil. Metals are generally lower than they were last time, and that's not too much of a shock considering this was a shorter run. Still, these readings are impressive for such a long oil run, considering the typical run for this type of engine is just about 7,000 miles. The oil is holding up well, and no contaminants were found. Your TBN was 6.9, so there's still lots of active additive left. Try 24,000 miles again, if you want. Nice engine!
Code:
OIL AME 15w40 AME 15w40 AME 15w40 AME 15w40 AME 15w40 AME 15w40 VPBE 5w40
MILES IN USE 20,617 24,757 21,779 19,779 12,006 9,006 8,038
MILES ON UNIT 168,598 147,981 145,003 123,224 115,451 112,451 102,862
SAMPLE TAKEN 8/9/14 8/9/13 6/13/13 6/13/12 3/1/12 1/2/12 9/6/11
MAKE UP OIL 2 0 2.5 2.5 0 0 0
ALUMINUM 2 3 2 2 2 2 2
CHROMIUM 0 1 0 1 0 0 0
IRON 16 17 14 16 11 9 7
COPPER 4 6 3 4 2 2 3
LEAD 2 3 2 2 1 2 6
TIN 0 0 0 1 0 2 0
MOLYBDENUM 1 2 0 6 7 8 42
NICKEL 1 1 0 1 0 1 0
MANGANESE 0 0 0 0 0 0 0
SILVER 0 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0 0
POTASSIUM 7 0 4 4 0 0 0
BORON 7 5 2 10 9 10 34
SILICON 7 8 9 8 7 7 8
SODIUM 5 6 5 6 5 5 6
CALCIUM 3729 4140 3888 3604 3153 3334 820
MAGNESIUM 19 33 31 197 213 234 1190
PHOSPHORUS 1145 1401 1252 1262 1132 1241 1071
ZINC 1384 1474 1500 1323 1226 1369 1300
BARIUM 1 0 0 0 0 0 0
CADMIUM 0
VANADIUM 0
ANTIMONY 0
LITHIUM 0
SUS @ 210F 72.6 73.2 74.6 73.0 71.3 71.7
Visc @ 100C 13.63 13.8 14.6 14.14 13.73 13.29 13.40
Flashpoint 450 430 430 425 435 400
Fuel % <0.5 <0.5 <1% <0.5 <0.5 <0.5 1.0
Antifreeze % 0.0 0.0 0.0 0.0 0.0 0.0
Water % 0.0 0.0 <.1% 0.0 0.0 0.0 0.0
Insolubles % 0.3 0.3 0.3 0.2 0.2 0.1
TBN 6.9 4.5 7.0 5.8 8.7
Soot <.1%
Oxidation 53
Nitration 10
