Thank you so very much Jeff for taking the time to explain I'm new to this forum. I had my husband a few weeks back install that 180 degree thermostat you referred to (pictures below of new Thermostat) I will tell him to flush the system again and then use the Luca's coolant as well. I did hear others say that the ODBll doesn't pick up all error codes so I should take it to the dealer but I'm gonna try your idea first and use it anyway. Does it work on iPhone as well?
Thanks again :-)