a co-worker of mine asked me to start dooing the oil chnages in her 2008 sentra. was thinking of going 4k oci with pennzoil platinum and a P1 14612 filter. could the longer P1 14610 filter be used? and also what is the cross reference to a Fram XG filter? ill either use the XG or the purolator. also ill be doing the car on ramps, my question is should i put the car on park on the ramps and add the oil,or shoudl i put it in neutral with the parking brake on then lower it down to add the oil? something makes me uneasy about adding the oil while the car is on an incline and starting it that way to lower it off the ramps.