How often do you change your oil in your ZR2?

[cgrubb1]

I changed mine the first 1000 miles. Again around 4000 miles. Again at 8000 miles. I plan on around 4500 - 5000 miles regularly. However my first two oil changes I used Mobile 1 Truck and Suv and a wix filter. My last oil change I used AC Delco oil and filter. My mpg went up about 2 with AC Delco oil. Very interesting.

I changed mine around 800 miles with Mobil 1, then again around 4000 miles with Amsoil and saw about a .5-1 mpg drop