Gentlemen, I've come to the conclusion I don't like crawling around under my truck any more. Especially during the winter months in Michigan, no heat in the garage! As such, I'm upgrading to a quality synthetic oil and filter in the Dodge. It is aging very gracefully with 77,000 miles and absolutely no rust. My question is, would the Dodge be better served by using Mobil 1, or the extended protection flavor? Pennzoil Platinum is certainly worth consideration, but the Ultra isn't available locally. It is my intent to use either a Mobil 1 or Fram Ultra oil filter. Another thing to consider is the fact I drive a whopping 4.5 miles to work, 1 way. The truck does do a lot of short tripping (1-3 miles). Maybe a 10,000 mile oci isn't a good idea under these driving conditions? One last thought. I HATE spending money on new, over priced trucks! This little guy should hopefully run at least 4 more years. I solicit your thoughts and comments.