GM recommends changing the transmission fluid after every 15 hours of track use, which was 7 track days and 6,392 miles for me.
Blackstone was actually quite impressed with the results since they typically expect assembly contamination and extra metal from break-in. Viscosity was almost out of grade but overall this stuff held up pretty well. Undecided if I want to step up to a more stout fluid.
Code:
OIL ACDelco MTF
MILES IN USE 6,392
MILES 6,392
SAMPLE TAKEN 9/22/17
ALUMINUM 11
CHROMIUM 1
IRON 82
COPPER 22
LEAD 1
TIN 1
MOLYBDENUM 2
NICKEL 2
MANGANESE 35
SILVER 0
TITANIUM 3
POTASSIUM 3
BORON 46
SILICON 16
SODIUM 9
CALCIUM 0
MAGNESIUM 1
PHOSPHORUS 160
ZINC 11
BARIUM 3
INSOLUBLES 0.2
WATER 0
FLASHPOINT ºF 385
SUS VIS 210ºF 43.4
cSt @ 212ºF 5.23
TBN -
TAN 1.3
Blackstone was actually quite impressed with the results since they typically expect assembly contamination and extra metal from break-in. Viscosity was almost out of grade but overall this stuff held up pretty well. Undecided if I want to step up to a more stout fluid.
Code:
OIL ACDelco MTF
MILES IN USE 6,392
MILES 6,392
SAMPLE TAKEN 9/22/17
ALUMINUM 11
CHROMIUM 1
IRON 82
COPPER 22
LEAD 1
TIN 1
MOLYBDENUM 2
NICKEL 2
MANGANESE 35
SILVER 0
TITANIUM 3
POTASSIUM 3
BORON 46
SILICON 16
SODIUM 9
CALCIUM 0
MAGNESIUM 1
PHOSPHORUS 160
ZINC 11
BARIUM 3
INSOLUBLES 0.2
WATER 0
FLASHPOINT ºF 385
SUS VIS 210ºF 43.4
cSt @ 212ºF 5.23
TBN -
TAN 1.3