Hey Everyone! So, I recently purchased myself a shiny new Nissan Frontier, V6, 4x4, auto. Going to be coming up to the first oil change shortly. It sees mostly very, very, very short trips (10 - 12 blocks). Service manual (such as it is, it is a leaflet printed by the dealer) says 1st service at 6000km, and every 6000km after that. They recommend Mobile Super 1000, or Mobil1, both in 5w-30. I have no problems with either oil, but I was curious about opinions on Pennzoil Ultra. According to Shell, it cleans better than Mobil1. Anyone have any real-world experience with it? Does it clean better than Mobil1? Pennzoil Ultra is hard to find around here, but I can order it if I buy 1 case at a time. Thanks!