Included Blackstone comments. I've moved on to different products, I feel I've hit my limit with the factory setup 7500 mile oci was 1yr. 50/50 city/highway. 10,291 mile oci change in commute 75 miles a day 10/90 city/ highway. I'd like to know more about how to read TAN although I don't know the virgin TAN, I know the oil is spent and it has been changed. Not worried about the slight acidity, but would like to know more about the limits when using both numbers to make decisions. Thanks everyone for your interest and comments.
Amended for TAN. The improved wear after a longer oil change
is a great sign that your engine has moved past the wear-in stage.
Hopefully it will produce nice, low wear numbers like this for a long time to come.
Universal averages are based on ~6,400 miles of oil use,
so you're getting better-than-average wear on a longer oil run,
and that's a great sign that no problems are developing inside your Duratec.
The TBN was getting low on active additive at 1.4,
and the TAN of 5.1 shows light acidity.
Try up to 11K miles on the next sample if you like.
OIL MC 5W20 MC 5W20 UNIVERSAL AVG
MILES IN USE 7500 10291
MILES 24775 35066
SAMPLE TAKEN 10/13/11 07/21/12
MAKE UP OIL 0 QTS. 0 QTS.
ALUMINUM 6 4 3
CHROMIUM 1 1 1
IRON 12 8 10
COPPER 3 1 6
LEAD 0 0 0
TIN 0 0 0
MOLYBDENUM 45 66 144
NICKEL 0 0 0
MANGANESE 4 1 1
SILVER 0 0 0
TITANIUM 0 0 0
POTASSIUM 0 1 1
BORON 70 62 89
SILICON 15 17 12
SODIUM 23 10 22
CALCIUM 2674 2204 2177
MAGNESIUM 22 13 82
PHOSPHORUS 756 710 772
ZINC 897 844 901
BARIUM 7 4 3
SHOULD BE
SUS VIS 210 F 54.7 52.0 48-58
cSt @ 100 C 8.67 7.89 6.7-9.9
FLASHPOINT F 385 395 >370
FUEL% ANTIFREEZE% 0.0 0.0 0.0
WATER% 0.0 0.0 0.0
INSOLUBLES% 0.3 0.4 TBN 2.2 1.4
TAN 5.1
Amended for TAN. The improved wear after a longer oil change
is a great sign that your engine has moved past the wear-in stage.
Hopefully it will produce nice, low wear numbers like this for a long time to come.
Universal averages are based on ~6,400 miles of oil use,
so you're getting better-than-average wear on a longer oil run,
and that's a great sign that no problems are developing inside your Duratec.
The TBN was getting low on active additive at 1.4,
and the TAN of 5.1 shows light acidity.
Try up to 11K miles on the next sample if you like.
OIL MC 5W20 MC 5W20 UNIVERSAL AVG
MILES IN USE 7500 10291
MILES 24775 35066
SAMPLE TAKEN 10/13/11 07/21/12
MAKE UP OIL 0 QTS. 0 QTS.
ALUMINUM 6 4 3
CHROMIUM 1 1 1
IRON 12 8 10
COPPER 3 1 6
LEAD 0 0 0
TIN 0 0 0
MOLYBDENUM 45 66 144
NICKEL 0 0 0
MANGANESE 4 1 1
SILVER 0 0 0
TITANIUM 0 0 0
POTASSIUM 0 1 1
BORON 70 62 89
SILICON 15 17 12
SODIUM 23 10 22
CALCIUM 2674 2204 2177
MAGNESIUM 22 13 82
PHOSPHORUS 756 710 772
ZINC 897 844 901
BARIUM 7 4 3
SHOULD BE
SUS VIS 210 F 54.7 52.0 48-58
cSt @ 100 C 8.67 7.89 6.7-9.9
FLASHPOINT F 385 395 >370
FUEL% ANTIFREEZE% 0.0 0.0 0.0
WATER% 0.0 0.0 0.0
INSOLUBLES% 0.3 0.4 TBN 2.2 1.4
TAN 5.1