With the way oil breaks down, you could go 5K-6K or better between oil changes if you wanted to and probably be fine...but probably aint good enough for me. I just stick to the 3K rule on every vehicle and don't worry about it.

I run Valvoline, not necessarily because I think it's the best, but because it's what our stores use.

Change the oil every 3K, rotate the tires every other oil change, and let the big dog EAT!