RT6 CK-4 spiked with Redline oil additive
From Polaris:
Truck Odometer: 431440 mi
Miles on oil: 22000
7 quarts of makeup oil added.
Fram Ultra filter.
Wear Metals:
(Element (ppm); 235k, 322k, 338k, 352k, 370k, 388k, 410k, 431k)
Iron; 42, 52, 30, 50, 38, 72, 45, 31
Chromium; 3, 3, 1, 2, 1, 2, 1, 1
Al; 4, 5, 3, 4, 3, 4, 3, 2
Cu; 3, 4, 1, 2, 1, 3, 1, 1
Lead; 9, 31, 4, 7, 2, 13, 1, 0
Contaminants:
Silicon; 6, 13, 7, 9, 7, 8, 6, 6
Sodium; 8, 6, 5, 4, 7, 9, 5, 4
Potassium; 62, 0, 1, 1, 4, 1, 2, 2
Multi-source metals:
Moly; 75, 76, 5, 4, 0, 2, 1, 0
Boron; 83, 38, 112, 69, 106, 62, 96, 130
Additive metals:
Mag; 1333, 1198, 179, 163, 94, 105, 98, 94
Calcium; 960, 1111, 2174, 2198, 2053, 2179, 2099, 2448
Phos; 1138, 1104, 1012, 1048, 924, 959, 944, 1217
Zinc; 1439, 1471, 1277, 1271, 1143, 1211, 1134, 1505
Fuel Dilution; Soot; Water;
KV100 (cSt); 15.1, 15.1, 15.3, 15.3, 15.4, 15.4, 16.2, 15.1
TBN; 6.54, 6.99, 5.69, 4.27, 4.96, 4.13, 5.6, 6.42
Oxidation; 15, 16, 14, 14, 13, 15, 14, 17
Nitration; 10, 10, 9, 9, 8, 9, 8, 9
Polaris Comments:
Data indicates no abnormal findings. Resample at normal interval. Lubricant and filter change acknowledged.
The big news on this UOA is the Iron concentration. Corrected Iron concentration on this OCI is 51 ppm due to the 7 quarts of makeup oil, yielding a wear rate of 2.3 ppm per kmile. This is a 30% decrease from the previous OCI, where the wear rate was 3.3 ppm/kmile. This was oil that I added 2/3 oz/qt of Redline Break-In oil additive when I did the last oil change. It seems to have had a marked effect. What conclusion can be drawn on the basis of one data point? None, but it does seem worth getting another bottle of Redline additive, and spiking the oil again.
Other wear metals are nearly zero.
KV100 has gone back to the same old 15.1 cSt.
Fuel dilution is same as always.
Soot has dropped back down to 0.1%
TBN was still very strong at 6.42, so the oil could have gone much longer.
Oil consumption went up on this OCI to 7 quarts in 22,000 miles. On the last, it was 6 qts for 21k. There seems to have been an upward trend over the last few intervals. At what point do I switch the engine over to dino 15w40 to save on oil cost? I'm thinking that I'll install Valvoline High Mileage Premium Blue for the summer and see how it does.
From Polaris:
Truck Odometer: 431440 mi
Miles on oil: 22000
7 quarts of makeup oil added.
Fram Ultra filter.
Wear Metals:
(Element (ppm); 235k, 322k, 338k, 352k, 370k, 388k, 410k, 431k)
Iron; 42, 52, 30, 50, 38, 72, 45, 31
Chromium; 3, 3, 1, 2, 1, 2, 1, 1
Al; 4, 5, 3, 4, 3, 4, 3, 2
Cu; 3, 4, 1, 2, 1, 3, 1, 1
Lead; 9, 31, 4, 7, 2, 13, 1, 0
Contaminants:
Silicon; 6, 13, 7, 9, 7, 8, 6, 6
Sodium; 8, 6, 5, 4, 7, 9, 5, 4
Potassium; 62, 0, 1, 1, 4, 1, 2, 2
Multi-source metals:
Moly; 75, 76, 5, 4, 0, 2, 1, 0
Boron; 83, 38, 112, 69, 106, 62, 96, 130
Additive metals:
Mag; 1333, 1198, 179, 163, 94, 105, 98, 94
Calcium; 960, 1111, 2174, 2198, 2053, 2179, 2099, 2448
Phos; 1138, 1104, 1012, 1048, 924, 959, 944, 1217
Zinc; 1439, 1471, 1277, 1271, 1143, 1211, 1134, 1505
Fuel Dilution; Soot; Water;
KV100 (cSt); 15.1, 15.1, 15.3, 15.3, 15.4, 15.4, 16.2, 15.1
TBN; 6.54, 6.99, 5.69, 4.27, 4.96, 4.13, 5.6, 6.42
Oxidation; 15, 16, 14, 14, 13, 15, 14, 17
Nitration; 10, 10, 9, 9, 8, 9, 8, 9
Polaris Comments:
Data indicates no abnormal findings. Resample at normal interval. Lubricant and filter change acknowledged.
The big news on this UOA is the Iron concentration. Corrected Iron concentration on this OCI is 51 ppm due to the 7 quarts of makeup oil, yielding a wear rate of 2.3 ppm per kmile. This is a 30% decrease from the previous OCI, where the wear rate was 3.3 ppm/kmile. This was oil that I added 2/3 oz/qt of Redline Break-In oil additive when I did the last oil change. It seems to have had a marked effect. What conclusion can be drawn on the basis of one data point? None, but it does seem worth getting another bottle of Redline additive, and spiking the oil again.
Other wear metals are nearly zero.
KV100 has gone back to the same old 15.1 cSt.
Fuel dilution is same as always.
Soot has dropped back down to 0.1%
TBN was still very strong at 6.42, so the oil could have gone much longer.
Oil consumption went up on this OCI to 7 quarts in 22,000 miles. On the last, it was 6 qts for 21k. There seems to have been an upward trend over the last few intervals. At what point do I switch the engine over to dino 15w40 to save on oil cost? I'm thinking that I'll install Valvoline High Mileage Premium Blue for the summer and see how it does.
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