Proper running temp - Series III

Although I am very much aware of the dangers of overheating these cars, I hear conflicting opinions on how hot they should run. Some say they always run a bit on the hot side and as long as you don't loose coolant the car hasn't overheated, others take the more conservative view that the needle should never go above the "O" in "NORMAL" on the guage. I have a 1972 Series III 2+2 which tends to run between the "R" and the "L" . So, just how hot is too hot? Thanks.

Jeff

If my 1973 OTS STAYS WITHIN THE WORD NORMAL I A HAPPY CAMPER.

JIM