You kids crack me up. :rofl: I love Oil and gasoline threads. Commodities are awesome and that's when another business force comes into play....
It's all in the marketing and that's what I keep saying.
Whether it's Uncle Bill's home grown motor oil, Yamalube, or Pennzoil (I'm not advocating that Pennzoil makes Yamalube), it more than likely comes from the same place. Different label etc.
So if you want to pay $2/qt for Quaker State QSX; $3/qt of Shell Rotella-T Dino; $6/qt for Mobil1; or even $12/qt for Monkey Butt Superlube Premium MBSP 4-stroke synthetic; bottom line is, your parts are getting lubed at the rated oil certification, all "meet or exceed" those certifications. Sooooooo, what's left to say what's best. Marketing!
Either way which ever gives you piece of mind use it. Until someone can produce fine scientific documentation proving that i.e. Valvoline does harm to a motor, it's all what makes all ya'll feel good.
Enjoy. :yahoo: