Originally posted by tttc:
I use Mobil one and also K&N filter but I still change my oil every 3,000.


Same here.

Well except I change my oil every 4 months. Before winter, after winter and once in the summer. (roughly every 3-4k miles)

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.