That is good news. The owners manual doesn't suggest changing diff oils for vehicles not subject to extreme conditions and your case would seem to support that. I will worry about those oils down the road. I will be changing ATF and coolant at this point.

Kind of off topic - I was just about to order Amsoil universal ATF (24 quarts) and then stopped right before entering my cc info. <img src="/forums/images/graemlins/frown.gif" alt="" /> The stuff is just too expensive for me (~$200 with tax and shipping - even at 'dealer prices'). I am going to stick with Mobil 1 (motor, trans, diffs, chassis) because I can buy it anywhere and it doesn't break the bank. I like the Amsoil philosophy, but I like my $$ more. Not trying to start a fight with Amsoil folks, just couldn't give em my cc number in the end. It was the tax charge that broke the camel's back.