Amazon has Castrol 03086 EDGE Extended Performance 5W-20 Advanced Full Synthetic Motor Oil, 5 Quart for $16.74 when you checkout with Subscribe and Save. Shipping is free.
https://www.amazon.com/Castrol-Ex…ive&sr=1-1
Alternatively, it is available at Walmart for $17.62. Choose in store pickup to save on shipping otherwise shipping is free on orders $35+.
https://www.walmart.com/ip/Castro…T/34997878