I was told by the dealer fleet sales rep to change it at 7500 miles, I haven't done that ever. I was trying to change the oil and filter around 3500 miles.
I've heard the oil will quit getting dirty right away after changing once the motor gets broken, between 35,000 to 60,000 miles, mine hasn't done that yet at 151,000+ miles
I'm going to try changing it around 5,000 miles now for a while and see if I like that or not
Thanks for the help to all of you