After taking a mid-interval sample, I changed the oil at about 7,200 mi. Subaru OEM blue filter as always. At around 4,900 mi when I took the last sample I added about a quart of oil. Mostly easy driving with a few autocross events on the interval. All the winter driving on this interval too. TBN seems to be getting low at this mileage and the TAN seems to be creeping up too.
Code:
Oil---------------------- Factory Fill ------ Edge OE 5w30---Pennzoil Platinum 5w30--- Pennzoil Ultra 5w30--- Mobil 1 ESP 5w30--- Mobil 1 ESP 5w30--- Universal Averages
Miles In Use 3,002 4,048 3,351 4,547 4,889 7,216
Miles on Unit 3,002 7,050 10,401 14,948 19,837 22,164
Date Changed 2/1/13 5/10/13 8/05/13 11/11/13 2/28/14 4/21/14
Make up Oil Added--------- 0 Qts. ------------ 0 Qts. ------- 0 Qts. ------------------ 0.6 Qts. ------------- 0 Qts. ------------ 1.0 Qts.
Aluminum------------------ 7 ----------------- 9 ------------ 6 ----------------------- 5 ---------------------4 ----------------- 4------------------ 4
Chromium 1 1 1 1 1 1 1
Iron 34 16 14 11 10 13 9
Copper 27 9 7 5 3 4 9
Lead---------------------- 0 ----------------- 0 ------------ 0 ----------------------- 0 -------------------- 0 ----------------- 1 ----------------- 3
Tin 4 3 2 0 0 0 1
Molybdenum 1079 435 118 70 81 82 72
Nickel 0 0 0 0 1 0 0
Manganese 2 1 1 0 0 0 1
Silver-------------------- 2 ----------------- 1 ------------ 0 ----------------------- 1 -------------------- 1 ----------------- 1 ----------------- 0
Titanium 0 1 0 2 0 0 0
Potassium 2 2 2 1 0 1 2
Boron 198 26 6 60 126 105 46
Silicon 89 19 10 5 4 5 11
Sodium-------------------- 8 ----------------- 6 ------------ 1 ----------------------- 2 -------------------- 3 ----------------- 4 ----------------- 28
Calcium 2105 1777 2388 2422 1218 1235 2006
Magnesium 12 6 12 15 6 8 369
Phosphorous 892 680 725 798 695 714 810
Zinc---------------------- 1082 -------------- 802 ---------- 831 --------------------- 842 ------------------ 778 --------------- 855 --------------- 960
Barium 2 1 0 0 0 0 0
SUS Viscosity @ 210F------ 52.4 -------------- 66.1 --------- 58.9 -------------------- 57.3 ----------------- 62.8 -------------- 63.5 -------------- 56-63
cSt Viscosity @ 100C 7.99 11.91 9.91 9.44 11.0 11.21 9.1-11.3
Flashpoint in F 405 435 405 425 410 435 >365
Fuel
Antifreeze %-------------- 0.0 --------------- 0.0 ---------- 0.0 --------------------- 0.0 ------------------ 0.0 --------------- 0.0 ----------------0.0
Water %. 0.0 0.0 0.0 0.0 0.0 0.0
Insolubles % 0.2 0.3 0.1 0.3 0.4 0.2
TBN N/A 2.8 N/A 5.2 3.0 1.5
TAN----------------------------------------------------------------------------------------------------------- 2.2 4.6
Code:
Oil---------------------- Factory Fill ------ Edge OE 5w30---Pennzoil Platinum 5w30--- Pennzoil Ultra 5w30--- Mobil 1 ESP 5w30--- Mobil 1 ESP 5w30--- Universal Averages
Miles In Use 3,002 4,048 3,351 4,547 4,889 7,216
Miles on Unit 3,002 7,050 10,401 14,948 19,837 22,164
Date Changed 2/1/13 5/10/13 8/05/13 11/11/13 2/28/14 4/21/14
Make up Oil Added--------- 0 Qts. ------------ 0 Qts. ------- 0 Qts. ------------------ 0.6 Qts. ------------- 0 Qts. ------------ 1.0 Qts.
Aluminum------------------ 7 ----------------- 9 ------------ 6 ----------------------- 5 ---------------------4 ----------------- 4------------------ 4
Chromium 1 1 1 1 1 1 1
Iron 34 16 14 11 10 13 9
Copper 27 9 7 5 3 4 9
Lead---------------------- 0 ----------------- 0 ------------ 0 ----------------------- 0 -------------------- 0 ----------------- 1 ----------------- 3
Tin 4 3 2 0 0 0 1
Molybdenum 1079 435 118 70 81 82 72
Nickel 0 0 0 0 1 0 0
Manganese 2 1 1 0 0 0 1
Silver-------------------- 2 ----------------- 1 ------------ 0 ----------------------- 1 -------------------- 1 ----------------- 1 ----------------- 0
Titanium 0 1 0 2 0 0 0
Potassium 2 2 2 1 0 1 2
Boron 198 26 6 60 126 105 46
Silicon 89 19 10 5 4 5 11
Sodium-------------------- 8 ----------------- 6 ------------ 1 ----------------------- 2 -------------------- 3 ----------------- 4 ----------------- 28
Calcium 2105 1777 2388 2422 1218 1235 2006
Magnesium 12 6 12 15 6 8 369
Phosphorous 892 680 725 798 695 714 810
Zinc---------------------- 1082 -------------- 802 ---------- 831 --------------------- 842 ------------------ 778 --------------- 855 --------------- 960
Barium 2 1 0 0 0 0 0
SUS Viscosity @ 210F------ 52.4 -------------- 66.1 --------- 58.9 -------------------- 57.3 ----------------- 62.8 -------------- 63.5 -------------- 56-63
cSt Viscosity @ 100C 7.99 11.91 9.91 9.44 11.0 11.21 9.1-11.3
Flashpoint in F 405 435 405 425 410 435 >365
Fuel
Antifreeze %-------------- 0.0 --------------- 0.0 ---------- 0.0 --------------------- 0.0 ------------------ 0.0 --------------- 0.0 ----------------0.0
Water %. 0.0 0.0 0.0 0.0 0.0 0.0
Insolubles % 0.2 0.3 0.1 0.3 0.4 0.2
TBN N/A 2.8 N/A 5.2 3.0 1.5
TAN----------------------------------------------------------------------------------------------------------- 2.2 4.6