Oddball fluid blend of Mobil dino ATF and a Caterpillar hydraulic oil. I know it sounds odd but the guy I paid almost $2K to to build it sent me the fluid and was giving me a good warranty. 25K on it since the rebuild and that was in 11months. I drag race and tow(light) with it on top of daily driving duties and the occasional road trip. I have a Permacool external filter, and a 2800 stall Edge Racing Converter as other notables. I drive it hard as you might guess. first column this test second universal averages aluminum 5 10 chromium 0 0 iron 58 150 copper 172 120 lead 24 90 tin 2 5 moly 0 0 nickle 0 1 manganese 0 2 silver 0 0 titanium 0 0 potasium 0 0 boron 47 71 silicon 5 30 sodium 9 12 calcium 1057 118 magnesium 2 12 phosphorus 541 271 zinc 350 95 barium 1 2 viscosity at 210F was 46.2 insolubles .1 TAN .2 Terry is going to look at this and I am looking at maybe going with one of Mola's fluids unless by some chance Terry tells me this is some wonder brew and the greatest thing to ever happen to my tranny. I will leave any comments either of them cares to share up to them to share. Looking at it myself I would say wear metals look fairly low exept the copper and the hydraulic oil is showing up with the odd aditive levels. I am hoping Terry says this is good numbers considering my usage but I justy got this report moments ago so no word from him yet.