Checker Auto Parts (might be a different name in your town) has a hot deal on two different oils.
Valvoline Synpower Full Synthetic, with coupon is $3.99, after $3.00 rebate is only 99¢ per quart. Good 'til 5/17, limit one case.
Castrol GTX, with coupon is $2.99, after $2.00 rebate is...