I thought I was a bit crazy when I stocked up on 16 quarts M1 0W-40 for my MB. Then I found this board and found out I was total lightweight! This board has encouraged me to hoard more motor oil. The recent price hikes for motor oil just make the hoarding strategy seem like an inflation hedge. I have used the M1 5W-30 Wal-Mart jugs for my parents cars. It used to cost about $20, now it is $25 for the SM, with no 5 gallon jugs of the EP available. I just added 2 5-gallon jugs of the Supertech Syn 10W-30 for my girlfriends Camry with a 5S-FE engine. It has Castrol Syntec Blend in their now and I will be posting a UOA next oil change just to get a baseline. I picked up 8 quarts of the Belgian Castrol 5W-40 because the after rebate price was too hard to resist. Anyways, I really appreciate you guys!