I have an '03 F150 with the 4.2 v6. I am driving from Indiana to California and back this summer and expect to put on 5500-6000 miles. This will be highway driving which should be easy on the oil but I expect temps will reach 100F or so. With the UOA's I've seen on this oil, which many show plenty of TBN after 3,000 or 4,000 miles, I am wondering if I could make this trip without an oil change midway through?