Coolant temp “normal”?

Etype V12 temp gauge will go up to the “L” in
NORMAL on the temp gauge when I run a steady 70 MPH for 15-20 minutes or so. Should I be alarmed? It seems to come back down to “A” when I exit the highway but it takes 10 minutes or so.

keep in mind gauges are an indication not an accurate measure, use an in hose temp sensor or a laser pistol type reader of hoses and block

A real time temp gauge would be great. Can anyone suggest a Sensor and guage setup for my etype v12?

just google search, plenty out there analog and digital in car read outs, matter of your personal choice @ what you want to look at…SAAS make one - plenty on ebay