Home Automotive & Car Tech Castrol 5W-30 GTX Magnatec Motor Oil (5-Quart) $19.88 Automotive & Car Tech Castrol 5W-30 GTX Magnatec Motor Oil (5-Quart) $19.88 By ARCOM - 13 November 2017 194 0 SHARE Facebook Twitter Go to the deal page: Castrol 5W-30 GTX Magnatec Motor Oil (5-Quart) $19.88