About Heavy-Duty Antifreeze & Coolant
Antifreeze and coolant formulated for compatible heavy-duty cooling-system applications. A cooling-system service should account for the existing coolant chemistry, system capacity, and the vehicle’s required mixture. Select coolant and additives as separate parts of that plan.
Before you choose
Check chemistry compatibility, dilution requirements, and whether the product is a coolant or an additive. Follow the current label rather than mixing by color.
Can I select coolant by its color?
Color alone does not establish compatibility. Match the manufacturer specification and product chemistry, and follow the required dilution and system-preparation instructions.
Product information reviewed September 7, 2026. Read AMSOIL’s current details.
