Will this work in a non-pressurized system like a Ford Model A?

Yes, but it works better with some pressure. I let my Model A start to warm up. then plug up the overflow pipe with a paper plug.

whats the difference between the red sealer and blue? do you need to use the thoroflush, then both sealers or just 1?

Definitely use the thoroflush, and follow the instructions very carefully. Then, use the red one. That is the actual ceramic sealer. The blue bottle is basically an after-treatment. My engine was dying in a very dramatic way, and the flush and sealer truly saved it. Just... Please... Follow the instructions... To the tee!

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Irontite Ceramic Motor Seal - Engine Cooling System Sealer for Head Gaskets, Radiators, Leaks, & Cracks - Prevents Corrosion & Rust, Improves Cooling Performance, Stops Overheating & Coolant Loss

Irontite Ceramic Motor Seal - Engine Cooling System Sealer for Head Gaskets, Radiators, Leaks, & Cracks - Prevents Corrosion & Rust, Improves Cooling Performance, Stops Overheating & Coolant Loss

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Product ID: 18200679

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💧permanent leak seal

🔥10% cooling boost

🛡️high-temp ceramic shield

Description

🛠️ Seal it, cool it, forget it — engine protection that works as hard as you do!

TRUSTED FOR 50 YEARS - Proven formula loved by engine pros and enthusiasts alike.
HIGH TEMP CERAMIC COATING - Durable protection against rust, corrosion, and overheating.
BOOST COOLING EFFICIENCY BY 10 - Keep your engine running cooler and longer under pressure.
EASY NO DISASSEMBLY APPLICATION - Apply directly to your cooling system—no mechanic needed.
SEAL LEAKS WITHOUT ENGINE TEARDOWN - Skip costly repairs—seal head gaskets, radiators & cracks fast.

Irontite Ceramic Motor Seal is a high-performance engine cooling system sealer that permanently fixes leaks in head gaskets, radiators, and cracks by forming a durable ceramic coating. It improves cooling efficiency by up to 10%, prevents corrosion and rust, and stops overheating and coolant loss—all without engine disassembly. Trusted for over 50 years, it offers a cost-effective, long-lasting solution for maintaining optimal engine temperature and reliability.

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TrustScore 4.5 | 7,300+ reviews

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Good experience, but the tracking updates could be better.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

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Good experience, but the tracking updates could be better.

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Manufacturer	Irontite Products Inc.
Brand	IRONTITE
Model	CERAMIC MOTOR SEAL - 16 OZ.
Item Weight	1.63 pounds
Package Dimensions	8.11 x 2.48 x 2.4 inches
Item model number	468-9120-16
Is Discontinued By Manufacturer	No
Manufacturer Part Number	468-9120-16

Irontite Ceramic Motor Seal - Engine Cooling System Sealer for Head Gaskets, Radiators, Leaks, & Cracks - Prevents Corrosion & Rust, Improves Cooling Performance, Stops Overheating & Coolant Loss

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