Hey guys! Im looking at putting a 2 gauge pillar pod into my Ranger and need to fill it. I already know what will be in one of the pods after burning up a tranny in my old F-150... A tranny temp gauge. The 2nd one is debateable. I can get a water temp gauge, oil temp gauge, or oil pressure gauge. Which one of the 3 is most important? Or is there another option that would be better? Thanks guys!