Got until the 27th to get to O'Reillys and get a 5qt. jug of Pennzoil Platinum w/ Wix filter for $34.99, you also get a $15 gift cards and if you click here
Fuel Rewards Network - DIFM-DIY Landing Page
You also get $1.00 off per gallon on your first fill up at participating Shell stations, so if you wait until you need 22 gallons it'll be free
Also you can get up to two $15 gift cards, so even at $22 it's still a nice buy, and Wix filters are pretty good.