Engine Coolant / Antifreeze: lifespan, maintenance and replacement

Typical lifespan: 30,000 miles or 2–3 years.

Maintenance schedule

• Check coolant level — Monthly
• Test coolant concentration — Annually
• Flush and replace coolant — Every 30,000 miles or 3 years

Signs it needs replacing

• Coolant appears rusty or has particles
• Engine running hot
• Sweet smell from engine bay
• Low coolant warning light
• Coolant leaks under vehicle

Tips

Never open a radiator or pressurized coolant cap when the engine is hot. Use the exact coolant specification in the owner’s manual; color alone does not identify compatibility. Keep coolant away from children and pets and collect spills safely.