Amazon.com also has 5-Quarts of Chevron Supreme Conventional Motor Oil (5W-20) on sale for $10 - $5 Rebate = $5. Shipping is free with Prime or if you spend $49 or more.
Editor's Notes & Price Research
Other viscosity available at different prices but I know 5w-20 is pretty popular nowadays. But this is a great price for great oil.
Rebate available here and can be submitted online but only 1 rebate per customer/household.
Offer valid 9/1/16 to 10/31/16