Blackstone Labs 31,365 miles on car and fluid Factory Fill No make up fluid This being the first ATF sample since the transmission was new, the higher-than-average metals and silicon are not surprising. Universal averages show typical wear levels for this type of transmission after about 19,600 miles on the oil. The elevated metals readings are from new parts wearing-in, as well as accumulated from normal use. Silicon is from sealers. The viscosity was a little light, likely from the long ATF use. The TAN reading of 1.6 shows the ATF was somewhat acidic. Check back after 20K miles on the next oil. ALUMINUM 46 CHROMIUM 3 IRON 103 COPPER 12 LEAD 1 TIN 3 MOLYBDENUM 1 NICKEL 6 MANGANESE 4 SILVER 0 TITANIUM 0 POTASSIUM 1 BORON 56 SILICON 184 SODIUM 3 CALCIUM 130 MAGNESIUM 3 PHOSPHORUS 282 ZINC 6 BARIUM 3 cSt Viscosity @ 100°C 42.7 SUS Viscosity @ 210°F 5.02 Flashpoint in °F 335 Fuel % Antifreeze % Water % Insolubles % TR TBN TAN 1.6 ISO Code I refilled with Redline D6, no noticeable change in performance.