Ford Super Duty trucks are built to work hard and that also means taking care of them to make sure they continue to work hard is essential. On the dash of your Super Duty there are a number of warning lights that when indicate issues with your truck's mechanics. The Coolant Additive Light is not one of them. When your Coolant Additive Light comes on, contact our Ford Expert team at Sherwood Ford.

The Check Coolant Additive Light comes on every 600 hours to remind you to check the coolant levels. While this does not indicate a problem, it does mean you should bring your Super Duty in to a certified Ford Service Center for a Coolant Check. DO NOT just add more coolant to the system! This may do more harm than good. To ensure the proper service of your Super Duty, schedule an appointment with our team.

Why Is a Coolant Additive Check Important?

The coolant in your Ford Super Duty diesel engine is specially formulated to prevent rust, scale buildup, and overheating. Over time, the additives in the coolant lose their effectiveness, which is why Ford recommends having them checked at regular intervals. Ignoring this service could lead to:

Engine overheating during towing or heavy hauling

Internal corrosion that shortens engine life

Costly repairs down the road

By bringing your truck to Sherwood Ford’s certified diesel service center, you can ensure the coolant system is inspected, tested, and treated correctly to keep your Super Duty performing like new.

Should I Just Add More Coolant When the Light Comes On?

No. This is one of the most common mistakes diesel truck owners make. Adding extra coolant without testing it first can actually upset the balance of the system and reduce its protective properties. Instead, the proper service involves:

Testing the coolant’s strength and additive levels

Flushing or adjusting the fluid if needed

Resetting the service reminder light

Our factory-trained Ford diesel technicians at Sherwood Ford have the tools and knowledge to perform this service quickly and correctly.

FAQs About the Ford Super Duty Coolant Additive Light

How often will the coolant additive light come on?
Every 600 engine hours as a reminder to check coolant quality.

Is the coolant additive light the same as a low coolant warning?
No. The coolant additive light is a scheduled maintenance reminder, not an emergency warning.

Can I ignore the coolant additive light?
You shouldn’t. Ignoring it can lead to reduced engine protection and costly repairs.

Where can I get my Ford Super Duty coolant checked near Edmonton?
At Sherwood Ford, serving drivers from Edmonton, Sherwood Park, and beyond with certified Ford diesel service.

Schedule Ford Diesel Service at Sherwood Ford

If the coolant additive light is on in your Ford Super Duty, the best step is to schedule an appointment with our team at Sherwood Ford. Our dealership is proud to be the go-to Ford service center for Edmonton-area diesel truck owners, offering certified maintenance, expert technicians, and the peace of mind that your Super Duty is always in good hands.

Conveniently located in Sherwood Park, we proudly serve Edmonton, St. Albert, Fort Saskatchewan, Leduc, and surrounding Alberta communities.

Schedule Your Service Appointment at Sherwood Ford Today