For those in the midwest USA and change their own oil, Menard's has a sale on 0W-20 Quaker State for $4.99 with a $2.50 rebate for a price after rebate of $2.49/qt. Maximum purchase for the rebate is 18 qts. I was there for something else and happened to notice what I thought was a good price. I think that you must buy before Saturday.