Installed a Shindy-Pro oil temp gauge on the bike today. The bike is a KLX 650, liquid cooled single cylinder. Oil is Delo 400 SAE 30 and the temps get at max, 165-170F, stopped in traffic. As soon as I'm rolling, the temps come down to 150-160F and remain there even at 65 mph on the highway. The sender unit is the crankcase drain plug. Pretty sure I believe the gauge as even after 40 miles in 80F+ temps you can keep your hand on the side cover for a few seconds without harm.