Home Slickdeals 16.9-Oz Bar’s Leaks High Mileage Engine Repair Additive $3.27 + Free Shipping... Slickdeals 16.9-Oz Bar’s Leaks High Mileage Engine Repair Additive $3.27 + Free Shipping with W+ or orders $35+. By ARCOM - 23 December 2021 57 0 SHARE Facebook Twitter Go to the deal page: 16.9-Oz Bar’s Leaks High Mileage Engine Repair Additive $3.27 + Free Shipping with W+ or orders $35+.