Thermagasket Defender – Preventive Head Gasket Protection

Protect Your Engine Before a Small Leak Becomes a Major Problem

Thermagasket Defender is designed for preventive maintenance in high-mileage vehicles and provides an additional layer of protection against head gasket leaks and failure.

Minor head gasket leaks can develop gradually and may go unnoticed for an extended period. Even a small leak can contribute to coolant loss, reduced fuel economy, poor engine performance and fluctuating engine temperatures.

For preventive maintenance, Thermagasket Defender is recommended for use through the cooling system every 30,000 miles.

Help Protect Against Head Gasket Failure

Thermagasket Defender can also be used following a head gasket replacement as an additional layer of protection during engine break-in.

Early head gasket problems can occur after installation due to issues such as:

• Faulty or damaged head gasket
• Cylinder heads not surfaced correctly
• Gasket becoming pinched during installation
• Incorrect head bolt torque specifications
• Incorrect torque sequence
• Reuse of head bolts when replacement is required
• Cooling system not being properly bled

Thermagasket Defender is formulated to help seal imperfections between the cylinder head and engine block, providing added protection where minor sealing imperfections may otherwise contribute to coolant leakage (Thermagasket- Preventive Head Gasket Sealer )