Yes, Blue Devil Head Gasket Sealer can work, but results vary depending on the severity of the leak and the condition of the engine. It is a temporary or last-resort solution for minor head gasket leaks, but it is not a permanent fix for severe damage.
How Does Blue Devil Head Gasket Sealer Work?
Blue Devil is a liquid chemical sealant designed to fill small cracks and leaks in the head gasket by hardening when exposed to high temperatures. It works by:
✔ Circulating through the cooling system – Mixes with coolant and flows to the leaking areas.
✔ Sealing minor cracks and leaks – The formula bonds with metal to create a durable seal.
✔ Withstanding high temperatures and pressure – Designed to handle normal engine operating conditions.
When Does Blue Devil Work Best?
🔹 For small head gasket leaks – Works well when symptoms like overheating, white smoke, or coolant loss are mild.
🔹 If the engine is still running smoothly – If the car misfires heavily or has excessive coolant in the oil, Blue Devil may not help.
🔹 When used correctly – Proper application is crucial for effectiveness.
When Does Blue Devil NOT Work?
❌ For severe head gasket failure – Large cracks, excessive oil/coolant mixing, or a blown gasket beyond repair won’t be fixed.
❌ If the cooling system is clogged or dirty – A clogged radiator or dirty coolant can prevent the sealant from flowing properly.
❌ On engines with major internal damage – If pistons, cylinders, or seals are damaged, a mechanical repair is needed.
How to Use Blue Devil Head Gasket Sealer (Step-by-Step Guide)
1️⃣ Drain and Flush the Cooling System – Remove old coolant and clean the system with water or a flush product.
2️⃣ Refill with Water – Blue Devil should be added to water, not coolant, for proper circulation.
3️⃣ Turn on the Engine – Start the car and let it reach operating temperature.
4️⃣ Slowly Add Blue Devil – Pour the product into the radiator or coolant reservoir.
5️⃣ Let the Engine Run – Keep it idling for 50 minutes to allow the sealer to bond.
6️⃣ Let it Cool and Refill Coolant – After the engine cools, replace the water with the proper coolant mix.
Conclusion
Blue Devil Head Gasket Sealer can work as a temporary solution for small leaks, but it’s not a replacement for a proper gasket repair. If the leak is severe, a professional mechanical fix is the only permanent solution.
FAQs
Q: How long does Blue Devil Head Gasket Sealer last?
A: It can last a few months to over a year, depending on the severity of the gasket issue.
Q: Does Blue Devil damage the engine?
A: If used correctly, it should not cause harm, but improper use (like adding it to a dirty or clogged system) may cause cooling system issues.
Q: How much does a real head gasket repair cost?
A: A professional head gasket repair can cost $1,000 to $3,000, while Blue Devil is a low-cost alternative around $40-$60.
Q: Can I use Blue Devil more than once?
A: Yes, but if the leak returns, it usually means the gasket damage is too severe for a sealant to fix.
Also Check:
• Does Blue Devil Really Work?
