Mobil 1 is great... But i have to say Royal purple is awesomer than hell...Gots to have that purple stuff..
now that I have stated my biased opinion on oil that cost over 7 bucks a quart...

just use anything that has a API service seal of SL or better... I have been running Walmart brand oil in my 97 saturn for 257000 miles with no problems.. And that changing it every 5k miles for the last 50K miles..

 

Royal Purple will give you a few extra ponies, around 5-8hp depending on the car, but it wears down your engine components like a ****. I know a bunch of racers that will actually fill their sponsors bottles of Royal Purple or Eneos with Mobil 1 and use it because they can't afford to tear apart their engines multiple times during the race season.

 

MOBILE ONE ONLY! royal purple is nothing but hype. I dynoed a 2003 pathfinder with mobile one and with royal purple same car same day back to back and royal purple actually lost power