i know this has been asked 5000 times, but i'm gonna do the switch to full synthetic amsoil soon. I'm at about 2500 miles right now, should i wait until 3k for the second oil change to run full syntetic. I want to dump it in right now, but would it be wise to wait until 3k miles. Also, i've heard people changing their oil a few times up until 3k, i just changed at 600 and planned on going to full synthetic at 3k like the manual states. Should i have changed it once or twice in between these intervals?