Originally Posted by JARblue

Yes. Mileage, I change it every 5K miles. At <$40 per oil change, I'm not worried about extended oil change intervals, plus I enjoy doing the work myself. Temperatures are hot. Pretty much 220 everyday, everywhere, and I drive it hard enough this isn't uncommon even in the winter (not that we get much of one in Central TX). Long road trips at 80+ mph can hit 240+ during the summer. I'm hoping to get an oil cooler by the end of the year, but $500 for the Z1 25 row isn't in my budget right now with rotors and pads a few weeks ago and new tires in the near future. I'm going to get Joe at Dynotronics to adjust the fan control in my tune as well.