im wondering what kind of a tool your looking for ? are you looking for some magical aparatus that tells you ? to this point there are no magical aparatus tools . just the aeroforce guage dashdaq and trinity also a reg guage but the aeroforce is cheaper and better then those . if you like you can make your own tool and sell it to the rest of us.heck you wouldnt even have to mount the aeroforce guage (since your one of those peopel that dont like them) and just plug it into the obd when you want the temp disconnect it and put it away. sorry some of us are just the guage type .