The last time i visited my Wal Mart oil aisle, it was chaotic and in transition. Today, i got a little better picture. Seems to be fewer choices overall. It appears that 5w/20 motor oils are getting eliminated in many instances. QSUD 5w/20 was on clearance. In addition, 10w/30 seems to be going by the wayside. There were no 5 qt jugs of PYB on the shelfe nor any place for it. Is this a reflection of auto manufacturers drifting back to 30 wt oils (vs 20 wts) and customer acceptance of 5w/30 in full size pickups?