This is the first UOA for my new-to-me truck. 2007 Chevy Silverado with a 5.3L V8. The truck is burning oil, probably because of Active Fuel Management, that's what I've read anyway. I switched to Penzoil High Mileage in 5w30. No real reason other than to try something different. Blackstone recommended bumping the change interval up to 6500~7000 miles. It doesn't seem to be burning the Penzoil as much. That could be the engine getting cleaner after the first run of Valvoline and now the Penzoil, not sure. Time will tell. I'm going to bump the change interval up and keep it topped off. OLM was only at 40% when I changed the oil.
Code:
OIL VML 5w30
MILES IN USE 4500K
MILES 134,776K
SAMPLE TAKEN 07/16/13
Make Up Added 1 qt
ALUMINUM 3
CHROMIUM 1
IRON 15
COPPER 11
LEAD 2
TIN 4
MOLYBDENUM 6
NICKEL 1
MANGANESE 1
SILVER 0
TITANIUM 2
POTASSIUM 2
BORON 4
SILICON 11
SODIUM 269
CALCIUM 2050
MAGNESIUM 12
PHOSPHORUS 625
ZINC 688
BARIUM 0
SUS VIS 210ºF 56.3
cSt @ 100ºC 9.15
Flashpoint in ºF 360
Fuel % TR
Antifreeze % 0.0
Water % 0.0
INSOLUBLES .3
TBN 1.3
Code:
OIL VML 5w30
MILES IN USE 4500K
MILES 134,776K
SAMPLE TAKEN 07/16/13
Make Up Added 1 qt
ALUMINUM 3
CHROMIUM 1
IRON 15
COPPER 11
LEAD 2
TIN 4
MOLYBDENUM 6
NICKEL 1
MANGANESE 1
SILVER 0
TITANIUM 2
POTASSIUM 2
BORON 4
SILICON 11
SODIUM 269
CALCIUM 2050
MAGNESIUM 12
PHOSPHORUS 625
ZINC 688
BARIUM 0
SUS VIS 210ºF 56.3
cSt @ 100ºC 9.15
Flashpoint in ºF 360
Fuel % TR
Antifreeze % 0.0
Water % 0.0
INSOLUBLES .3
TBN 1.3
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