And you're right none of us can read with the gauges and normal scan tools (actually should be called code readers). If you have a smart phone, let me dump a secret handshake advice on you.
Check this link:
https://www.amazon.com/s/ref=a9_asi_...qid=1487703643
I suggest find a bluetooth ODBII converter with LEDs. It will let you know if you are transmitting and reading.
Then search for Torque on iTunes or Android Play.
Then you can read with precision water temps.