This oil was run from 3/29/09 until 6/20/09. It was 10W-30 PP with a Napa Gold oil filter. My last UOA was a check up to see how things were doing after getting my intake gaskets redone. I ran a few intervals since then of PP and finally decided to check it again with the hope of being able to run it a little longer if things looked good. I'm pretty happy with this report.
I drive pretty gentle most of the time.
Wix air filter. Air filter changed at 100k miles on the odo and again at this oil change. I'm changing it every 10k now.
Blackstone Coments:
Nothing but a continuance of proper wear is indicated by the data from this most recent analysis of oil from your GM 3.8L power plant. Wear metals resided at low levels in line with averages, so no obvious problems exist at parts sharing the oil. Also, the main oil additive levels were normal for this oil type and grade, showing no heat or moisture damage occurred on this oil's watch. Silicon was low at 11 ppm, showing no problems at the air filtration/induction system. The oil did not contain any contaminants, that we could find. Try ~6,500 miles on the next fill of oil.
Comments welcome. I've got PP 10W/30 in it now with a Wix oil filter and plan to go until the OLM goes off which is typically around 7k miles.
Code:
OIL PP10W30 PYB10W30 PP5W30 M110W30 M110W30
MILES IN USE 5.0k 3.4k 5.1k 5.7k 4.9k Uni Avg
MILES 110k 87.1k 80.5k 70.4k 64.8k
SAMPLE TAKEN 6/20/09 6/10/08 2/28/08 9/2/07 7/3/06
ALUMINUM 2 2 3 3 2 3
CHROMIUM 1 1 1 1 1 1
IRON 8 9 24 14 8 13
COPPER 19 21 28 39 30 17
LEAD 5 9 4 21 19 8
TIN 0 2 1 0 0 1
MOLYBDENUM 48 3 52 98 83 64
NICKEL 0 0 1 0 0 0
MANGANESE 0 0 0 0 0 0
SILVER 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0
POTASSIUM 2 7 11 1 3 7
BORON 36 114 34 47 52 45
SILICON 11 29 13 12 12 11
SODIUM 2 8 10 5 4 22
CALCIUM 2944 2018 2919 2184 2354 2077
MAGNESIUM 10 7 12 11 13 90
PHOSPHORUS 639 646 656 538 589 692
ZINC 832 784 819 675 745 849
BARIUM 0 0 0 0 0 0
INSOLUBLES 0.3 0.2 0.3 0.3 0.3
WATER 0 0 0 0 0
FLASHPOINT ºF 410 400 400 410 420
SUS VIS 210ºF 59.2 56.6 57.9 58.6 60.8
cSt @ 212ºF 9.99 9.24 9.63 9.83 10.44
TBN n/a n/a 3.9 3.7 n/a
I drive pretty gentle most of the time.
Wix air filter. Air filter changed at 100k miles on the odo and again at this oil change. I'm changing it every 10k now.
Blackstone Coments:
Nothing but a continuance of proper wear is indicated by the data from this most recent analysis of oil from your GM 3.8L power plant. Wear metals resided at low levels in line with averages, so no obvious problems exist at parts sharing the oil. Also, the main oil additive levels were normal for this oil type and grade, showing no heat or moisture damage occurred on this oil's watch. Silicon was low at 11 ppm, showing no problems at the air filtration/induction system. The oil did not contain any contaminants, that we could find. Try ~6,500 miles on the next fill of oil.
Comments welcome. I've got PP 10W/30 in it now with a Wix oil filter and plan to go until the OLM goes off which is typically around 7k miles.
Code:
OIL PP10W30 PYB10W30 PP5W30 M110W30 M110W30
MILES IN USE 5.0k 3.4k 5.1k 5.7k 4.9k Uni Avg
MILES 110k 87.1k 80.5k 70.4k 64.8k
SAMPLE TAKEN 6/20/09 6/10/08 2/28/08 9/2/07 7/3/06
ALUMINUM 2 2 3 3 2 3
CHROMIUM 1 1 1 1 1 1
IRON 8 9 24 14 8 13
COPPER 19 21 28 39 30 17
LEAD 5 9 4 21 19 8
TIN 0 2 1 0 0 1
MOLYBDENUM 48 3 52 98 83 64
NICKEL 0 0 1 0 0 0
MANGANESE 0 0 0 0 0 0
SILVER 0 0 0 0 0 0
TITANIUM 0 0 0 0 0 0
POTASSIUM 2 7 11 1 3 7
BORON 36 114 34 47 52 45
SILICON 11 29 13 12 12 11
SODIUM 2 8 10 5 4 22
CALCIUM 2944 2018 2919 2184 2354 2077
MAGNESIUM 10 7 12 11 13 90
PHOSPHORUS 639 646 656 538 589 692
ZINC 832 784 819 675 745 849
BARIUM 0 0 0 0 0 0
INSOLUBLES 0.3 0.2 0.3 0.3 0.3
WATER 0 0 0 0 0
FLASHPOINT ºF 410 400 400 410 420
SUS VIS 210ºF 59.2 56.6 57.9 58.6 60.8
cSt @ 212ºF 9.99 9.24 9.63 9.83 10.44
TBN n/a n/a 3.9 3.7 n/a