Home Automotive & Car Tech Castrol 5W-30 GTX Magnatec Motor Oil (5-Quart) $17.88 Automotive & Car Tech Castrol 5W-30 GTX Magnatec Motor Oil (5-Quart) $17.88 By ARCOM - 7 June 2018 170 0 SHARE Facebook Twitter Go to the deal page: Castrol 5W-30 GTX Magnatec Motor Oil (5-Quart) $17.88