Is the Seal-Oil, Crankshaft Part No. 12279-4Z001 covered by the 60,000 mile drive train warranty? The reason I ask is mine is leaking AGAIN! At 14,550 miles mine was replaced under warranty by the dealer. This past weekend while changing my oil I noticed it is leaking AGAIN. I now have 55,500 miles on my truck. What's the story with this seal? I have seen some others post this same problem. Thanks.