I have 2200 Miles/3.5 Months on Chevron Supreme 10W30 in my 4.0L Jeep. I drive it kind of hard because Houston drivers are just awful. It makes 10 mile runs every morning and back 3 hours later. Then i just drive it around town for daily trips. Should I change? I have 7 quarts of Havoline Synthetic 10W30 (Biglots, 1.99) and a FL1A filter waiting if I should.