Hello guys... a short quick intro about me: Jonathon Talley owner of http://www.v6f150.com I also own a 2002 4.2 V6 F150 that I have modified and race on a regular basis. Currently the motor is at the machine shop undergoing repairs (2 spun rod bearings) but prior to these repairs the motor has 80,000 miles in the 2 years I have owned it. I do use nitrous and for about 4 months I was using about 18lbs of nitrous a week. My oil of choice was royal purple 10w-30 and I always change oil every 3,000 miles with oil filter. Well considering I am an owner of a automotive message board I am here to educate my mind further to help benifit my members. Is the Royal Purple street oil 10w-30 truly use a group III base oil? and does the new M1 SuperSyn reall based off a POA? When the motor is finished getting rebuilt I plan on getting an oil analyzed every 2,000 miles. I do drive between 30,000 - 40,000 miles a year along with visiting the dragstrip about 2 times a month and once a month autocross events and an occasional open road course event. My motor does go through some heavy abuse and I think maybe not using the proper oil for my driving habits is what made the bearings to go bad. So, heres ur chance to kinda recommend me an oil to start off with and to get test results every 2k miles. I've always used RP but when it wasn't availabe I've used M1. Always used Motorcraft oil filter. any recommendations here?