I have been BITG vistor for long time but never made an account till recently. Yesterday I was at Apache Junction, AZ to drive the Apache Trail, while there I dropped by the local Walmart and long and be hold I spotted the Unicorn (Pennzoil Ultra). I purchased (3) 5 quart jug since it will be awhile before I spotted it again since I currently lived in San Diego, CA. Why is this oil so hard to find?!?!