Home Slickdeals Castrol GTX High Mileage Synthetic Blend 10W-40 Motor Oil: Helps Protect Emission... Slickdeals Castrol GTX High Mileage Synthetic Blend 10W-40 Motor Oil: Helps Protect Emission Systems, 1 Quart 149D7B – $1.65 By ARCOM - 19 December 2023 16 0 SHARE Facebook Twitter Go to the deal page: Castrol GTX High Mileage Synthetic Blend 10W-40 Motor Oil: Helps Protect Emission Systems, 1 Quart 149D7B – $1.65