Chapter 9 of the owners manual covers towing issues fairly well.I'm looking into getting either a pop-up camper or an Ultra-Lite Travel Trailer. When looking at the weight, should I be looking at the GVWR or the Gross Dry Weight? Also, would it be a good idea to get an oil and/or transmission cooler? How much do those run? Any help would be greatly appreciated. Thanks!
http://www.thenissanpath.com/filelib/R51/Owners/2006-Nissan-Pathfinder.pdf
Depending on where you are going to be towing changing the engine oil to a 0W-40 or 5W-40 will reduce engine wear. The R51 already has a transmission cooling radiator, but hanging a screen in front of the engine radiator and trans rad will stop rock damage and keep bugs from plugging the rads and over heating either.