2000 Pontiac Bonneville SSEi
Series II 3800 supercharged engine
Valvoline MaxLife 5W-30 (regular MaxLife in red bottle, not NextGen)
Same brand oil was used in run prior to this one
4,874 miles on oil sample (oil was in use for almost 4 months)
170,218 miles in engine
Forgot to check the OLM for %
UOA was done at Blackstone Labs
Added 1 qt make up oil, 431 miles into run (4443 miles in run after top-off)
Driving is around 70% hwy / 30% city
Driving style is gentle-to-moderate
This was my first-ever UOA. I wanted to see how my hi-mileage engine is doing, and if I should replace my LIM gaskets. I do not think they are original, but I do not know how old they are. I bought the car in Dec 2010 at 152K miles and have been keeping maintenance up to date. Any feedback is appreciated.
Code:
OIL ML5w30 Univ Avg
MILES IN USE 4874 4600
MILES 170,218
SAMPLE TAKEN 12/17/11
ALUMINUM 4 3
CHROMIUM 1 1
IRON 10 13
COPPER 13 16
LEAD 4 7
TIN 0 1
MOLYBDENUM 144 65
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 0 0
POTASSIUM 3 7
BORON 5 46
SILICON 24 11
SODIUM 348 38
CALCIUM 2060 2102
MAGNESIUM 9 79
PHOSPHORUS 741 690
ZINC 826 842
BARIUM 0 0
INSOLUBLES % 0.4
WATER % 0 0
FUEL % trace
ANTIFREEZE % 0 0
FLASHPOINT ºF 365 >365
SUS VIS 210ºF 57.4 56-63
cSt @ 212ºF 9.47 9.1-11.3
TBN 3.2
Comments from Blackstone:
Quote:
The only reading out of line in this first sample from your 170,218-mile Bonneville's engine was
silicon. And silicon can be harmless or it can be abrasive. From the looks of wear, we'd guess it was a
harmless source (like a sealer or something that was used). Universal averages show typical wear levels
after about 4,600 miles for this engine type. Your wear numbers all look good compared to those averages.
A trace of fuel was found, but that's not causing any problems that we can see. The TBN read 3.2 showing
plenty of active additive left (1.0 is low). Try 6K miles.
Thanks --
Ken_W
Series II 3800 supercharged engine
Valvoline MaxLife 5W-30 (regular MaxLife in red bottle, not NextGen)
Same brand oil was used in run prior to this one
4,874 miles on oil sample (oil was in use for almost 4 months)
170,218 miles in engine
Forgot to check the OLM for %
UOA was done at Blackstone Labs
Added 1 qt make up oil, 431 miles into run (4443 miles in run after top-off)
Driving is around 70% hwy / 30% city
Driving style is gentle-to-moderate
This was my first-ever UOA. I wanted to see how my hi-mileage engine is doing, and if I should replace my LIM gaskets. I do not think they are original, but I do not know how old they are. I bought the car in Dec 2010 at 152K miles and have been keeping maintenance up to date. Any feedback is appreciated.
Code:
OIL ML5w30 Univ Avg
MILES IN USE 4874 4600
MILES 170,218
SAMPLE TAKEN 12/17/11
ALUMINUM 4 3
CHROMIUM 1 1
IRON 10 13
COPPER 13 16
LEAD 4 7
TIN 0 1
MOLYBDENUM 144 65
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 0 0
POTASSIUM 3 7
BORON 5 46
SILICON 24 11
SODIUM 348 38
CALCIUM 2060 2102
MAGNESIUM 9 79
PHOSPHORUS 741 690
ZINC 826 842
BARIUM 0 0
INSOLUBLES % 0.4
WATER % 0 0
FUEL % trace
ANTIFREEZE % 0 0
FLASHPOINT ºF 365 >365
SUS VIS 210ºF 57.4 56-63
cSt @ 212ºF 9.47 9.1-11.3
TBN 3.2
Comments from Blackstone:
Quote:
The only reading out of line in this first sample from your 170,218-mile Bonneville's engine was
silicon. And silicon can be harmless or it can be abrasive. From the looks of wear, we'd guess it was a
harmless source (like a sealer or something that was used). Universal averages show typical wear levels
after about 4,600 miles for this engine type. Your wear numbers all look good compared to those averages.
A trace of fuel was found, but that's not causing any problems that we can see. The TBN read 3.2 showing
plenty of active additive left (1.0 is low). Try 6K miles.
Thanks --
Ken_W