Wasn't sure where to post this, but Advance Auto Parts currently has a pretty sweet deal on 1-Gallon Shell Rotella T6 5W-40 Heavy Duty Fully Synthetic Motor Oil for $22.99 - 30% off with promo code DOW9 - $5 rebate = $11 with free store pickup.
Just got some myself.
Source:
http://slickdeals.net/permadeal/9050...etic-motor-oil