My '68 428 normally runs around 80 C on the water and in warmer weather about 75-80 C on the
oil. Just took a 1,00 mile round trip, with up to 400 miles on 2 of those days. On a couple of the days it was in the low 90's F and the water remained constant, the
oil rose to 90 C. I do have the
oil cooler in my ERA. I agree with prior posts in that you need to be more concerned with what is normal for your vehicle and be cautious of spikes or excessive cooling.