for a stock VX, it is not going to make shit difference what oil you use, or what filter you use, if you upgrade motors then think about what oil is best. Mobil1 and swepco come to mind when i think about good oil. And OEM, and wicks are two good filters. Let me put it this way, I put a fram or penzoil filter on my D15 as I with penzoil 10w40 as i do not give a shit about that motor and i plan on swapping it. However the motor has 116,000 miles on it and run perfectly as I change my oil every 3000 miles.