In my local paper is an O'Reilly ad offering a maximum of 6 quarts of Quaker State oil (Q Torque and Q Advance) for /free/ after rebate. Each quart is regularly $5.69.
Q Torque and Q Advance are the good stuff, the synthetic Quaker State.
A $35 value totally free after mail-in rebate. I get the feeling O'Reilly stores across the country might be running this promo.