That's about where mine runs. If I remember right it's about 1/8 of an inch above C no matter what I'm doing. Of course I have yet to use it in reall hot weather yet so we'll see. I did manage to run it up to just under red once. Seems that when mowing a new lawn with lots of hay you have to keep an eye that the front grill doesn't become clogged. I'm sure glad I noticed it before it quit!
Jeff