$19.50: 6-Pack 1-Quart Mobil Full Synthetic Motor Oil (5W-30) at Amazon ($3.25 each)

6-Pack 1-Quart Mobil Full Synthetic Motor Oil (5W-30) at Amazon for $19.50. Shipping is free with Prime or on $35+ orders. Price: $12.50 lower (39% savings) than the list price of $32, $14.81 lower (43% savings) than the previous price of $34.31. Previous Frontpage Deal at $19.65 with +34 Deal Score and 18 comments.