Ya Know, a while ago around 2001-02, a friend asked me to help him change the oil/filter in his Mercury Grand Marquis as he couldn't get off the oil filter the time before(we had to jack up the front end of the car & let the front wheels hang in order to drop the filted down). Annnyyywaaayyy, he brought whith him Castrol SynTec 5W30 and a Fram filter. What I noticed as I was pouring in the oil is, how cloudy the SynTec looked compared to just about any oil that I've used recently. I was just in W*M last night and saw the clear bottles of ST Syn and I agree that it too is cloudy. HMMMMMMM! This ST Syn were in the clear WPP Bottles!