Hello friends, about a week ago I bought a 2004 1.4 hdi 307 with 250 thousand km/h. I bought the car from outside the city. I went to the highway and loaded it up. I was driving happily. I drove for 15-20 minutes at 160-170 km/h. Then my eye caught the temperature. I guess it was around 105. It was a little ahead of the line after 90. I slowed down immediately and stopped. As soon as I stopped, I gave it a little gas. It dropped to 80 in 2 minutes. Then I set off. I came to my city at a constant speed of 120 km/h. I came to my city at around 105 on the ramps, around 100 on the flat, and when I stopped at the lights, it was around 80. It doesn't exceed 85 in city driving, but when it is loaded, it goes around 105. Do you think these values are normal? Should I take it to a mechanic?