im way off from my oil change say 3.5K and i have a FRAM XG with some PP 0w20 in the car now. to me the fram XG is a waste sine i dont use it twice (under warranty).i was thinking next OC i would run mobil1 AFE 0w20 or mobil1 EP 0w20 with a wix filter. there is 2 diff kinds a white one and a black one. how are they different?