Yeah, I know. Look at the main bottom of the specs. that I posted above. It says to use Honda GN4 motor oil in the transfer case. Engine oil for the crankcase is listed at the top.i think he's asking about the oil for the transfer case..where the front drive shaft goes to the front..if this is the case..any good 80w-90 is ok..it takes the same as the very front diff..and the back differentals.