Home Slickdeals Costco Members: 2-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various) $30.99... Slickdeals Costco Members: 2-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various) $30.99 B&M By ARCOM - 3 September 2023 21 0 SHARE Facebook Twitter Go to the deal page: Costco Members: 2-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various) $30.99 B&M