Review on Zerex Extended Life Nitrite-Free HD 50/50 Antifreeze/Coolant 1 Gallon - Prediluted & Ready-to-Use by Jared Allred

For Ford 6.0L Diesel after thorough cleaning with chemical coolant. Never mix coolants and never use silicate-based coolants in a 6.0 liter vehicle. The silicate-based coolant falls out and clogs the oil cooler with slime/sludge, eventually causing the oil cooler and EGR cooler to fail, potentially leading to engine damage. Flush the cooling system thoroughly and use this antifreeze.