I am basically refering to the owners manuel which says to use M.C mercon LV fluid,11.6 quarts for the 6F55 transmission,rear differential (AWD)Fluid M.C SAE 80w-90 2.4 pints,Power transfer unit (PTU)M.C SAE 75W-140 synthetic rear axle lubricant 18 ounces,based on 13 SHO manuel.