Home Slickdeals 5-Quart Castrol GTX Magnatec 5W-30 Full Synthetic Motor Oil $14.57 w/ S&S... Slickdeals 5-Quart Castrol GTX Magnatec 5W-30 Full Synthetic Motor Oil $14.57 w/ S&S + Free Shipping ~ Amazon By ARCOM - 17 July 2018 181 0 SHARE Facebook Twitter Go to the deal page: 5-Quart Castrol GTX Magnatec 5W-30 Full Synthetic Motor Oil $14.57 w/ S&S + Free Shipping ~ Amazon