My motor home has no extra gauges.
I do not notice the lack.
I find that engine oil temp and, to a certain extent, transmission oil temp, will be reflected in the engine coolant temp. Therefore, I keep a close watch on the engine coolant temp when driving in the mountains. If it begins to climb, I know to pull over and let it "catch its breath".
I do miss the EGT gauge I had in my old Dodge 3500 CTD! Of course, I don't have a turbo, so it really isn't all that critical, but it would be nice to see what is going on.
I don't miss it enough to spend the money to get one installed, though.
