Funny you should ask, I just covered this with jeeperkate in a PM. The front diff is 1.5 quarts of 80w-90, the rear diff is 2.2 quarts of 80w-90, the transfer case is 2 quarts of Dexron III ATF and the transmission is 9.1 quarts of Dexron II ATF. When you drain the transmission, you'll only get 7 quarts out as 2 will remain in the torque converter. Also the rear limited slip diff uses 7 ounces of friction modifier as per Isuzu's recommendation, but the total capacity is still 2.2 quarts.