Costco Members: 4-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various) $64 each

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0w-20: https://www.costco.com/kirkland-sig...or-oil-5-quart,-4-pack.product.100687280.html

5w-30: https://www.costco.com/kirkland-sig...or-oil-5-quart,-4-pack.product.100690432.html