This is the third manual transmission change the car has seen. Mileage worked out to nearly double (14.4k vs 7.6k) and track time was about 50% longer (22 hours vs 15 hours). The car has a dedicated transmission cooler.
Blackstone said things still look fine. Wear metals are dropping on a per-mile basis but the viscosity was again a bit thin, though didn't seem to cause any issues.
I'm now using Red Line D4 ATF instead of the OEM fluid.
Code
OIL ACDelco ACDelco ACDelco
MILES IN USE 14,465 7,623 6,392
MILES 28,480 14,015 6,392
SAMPLE TAKEN 3/24/20 10/20/18 9/22/17
ALUMINUM 8 8 11
CHROMIUM 0 0 1
IRON 63 52 82
COPPER 7 12 22
LEAD 1 1 1
TIN 0 0 1
MOLYBDENUM 0 1 2
NICKEL 0 1 2
MANGANESE 7 13 35
SILVER 0 0 0
TITANIUM 1 2 3
POTASSIUM 1 1 3
BORON 109 96 46
SILICON 10 9 16
SODIUM 3 4 9
CALCIUM 30 21 0
MAGNESIUM 1 0 1
PHOSPHORUS 270 234 160
ZINC 7 7 11
BARIUM 0 1 3
INSOLUBLES 0.1 0.1 0.2
WATER 0 0 0
FLASHPOINT �F 400 390 385
SUS VIS 210�F 41.4 42.3 43.4
cSt @ 212�F 4.59 4.89 5.23
TBN
TAN 1.8 1.3 1.3
Blackstone said things still look fine. Wear metals are dropping on a per-mile basis but the viscosity was again a bit thin, though didn't seem to cause any issues.
I'm now using Red Line D4 ATF instead of the OEM fluid.
Code
OIL ACDelco ACDelco ACDelco
MILES IN USE 14,465 7,623 6,392
MILES 28,480 14,015 6,392
SAMPLE TAKEN 3/24/20 10/20/18 9/22/17
ALUMINUM 8 8 11
CHROMIUM 0 0 1
IRON 63 52 82
COPPER 7 12 22
LEAD 1 1 1
TIN 0 0 1
MOLYBDENUM 0 1 2
NICKEL 0 1 2
MANGANESE 7 13 35
SILVER 0 0 0
TITANIUM 1 2 3
POTASSIUM 1 1 3
BORON 109 96 46
SILICON 10 9 16
SODIUM 3 4 9
CALCIUM 30 21 0
MAGNESIUM 1 0 1
PHOSPHORUS 270 234 160
ZINC 7 7 11
BARIUM 0 1 3
INSOLUBLES 0.1 0.1 0.2
WATER 0 0 0
FLASHPOINT �F 400 390 385
SUS VIS 210�F 41.4 42.3 43.4
cSt @ 212�F 4.59 4.89 5.23
TBN
TAN 1.8 1.3 1.3