TR3: Wow, I have never seen 0w30 in the 5 quart jug.
My walmart has a TON of different 5 quart jugs of M1:
M1 5W-20
M1 5w30
M1 5w30 T&SUV
M1 10w30
M1 15W-50
M1 EP 5W-20
M1 EP 5w30
M1 EP 10w30
M1 EP 15W-50
M1 HM 10w30
M1 HM 10W-40
They also stock quarts of all the above, along with 0W-20. I am not even gonna go down the list of the NON "synthetic" Mobil oils(clean xxxx). The only 2 things they DON'T stock are 0w30 & 0W-40.