Home Slickdeals Costco Members: 4-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various) $64... Slickdeals Costco Members: 4-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various) $64 each + Free Shipping By ARCOM - 10 April 2024 15 0 SHARE Facebook Twitter Go to the deal page: Costco Members: 4-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various) $64 each + Free Shipping