My wife's vehicle is a 2009 Jeep Patriot. It is the 2.4 L with CVT tranny. We recently bought a hitch to tow a small (4x6 or so) trailer, mostly for when we go camping or for stuff around the house. My question is whether we need to install an engine cooler to keep the engine from overheating? My understanding is that there already is a tranny cooler (?) b/c of the CVT. Some sources that I have read recommend an engine cooler as well. Does anyone have any knowledge or experience with this?