Thumb Score: +30 Amazon has 5-Qt Castrol GTX Full Synthetic 0W-20 Motor Oil for $21.56 - 5% when you check out via Subscribe & Save = $20.48. Shipping is free w/ Prime or on $35+ orders. Thanks to community member Zdhow for finding this deal. [LIST][*]Note: You may cancel Subscribe & Save any time after your order ships.