Hy-Per Lube Super Coolant Additive — 16 oz Pack of 3, Lowers Engine Temps & Protects Cooling System

Hy-Per Lube HPC100-3PK Super Coolant is a high-performance coolant additive that improves heat transfer, lowers engine and coolant temperatures, and protects cooling system metals and seals.

Designed as a concentrate to be added directly to your radiator or overflow reservoir, this 16 oz bottle (sold as a pack of three) uses advanced wetting agents to reduce surface tension in the coolant mixture. By improving contact between coolant and metal surfaces, Hy-Per Lube Super Coolant helps the system move heat away from the engine more efficiently, while also protecting components from rust, corrosion and electrolysis without changing the type or color of existing antifreeze.

How does this product reduce engine and coolant temperatures?

Super Coolant contains specialized wetting agents that change the coolant’s surface tension so it clings to and spreads over metal heat-transfer surfaces more effectively. Better metal-to-fluid contact increases heat extraction, allowing the system to dissipate temperature faster and lowering operating temps.

• Improves coolant contact with radiator, head, and block surfaces
• Accelerates heat transfer to the radiator and fan
• Shown to reduce temperatures by up to about 20–25°F under typical conditions

Will it protect my cooling system from rust and corrosion?

Yes — the formula includes inhibitors and lubricants that shield common cooling-system metals and water-pump seals. It helps prevent electrolysis and corrosion across aluminum, steel, cast iron and other alloys commonly used in engines and radiators.

• Corrosion inhibitors guard metal surfaces against rust
• Lubricates water-pump seals to extend seal life
• Formulated for compatibility with mixed-metal systems

Is this additive compatible with my existing antifreeze and engine type?

Super Coolant is designed to be compatible with all types and colors of antifreeze and can be used in gasoline and diesel engines. It’s suitable for passenger cars, trucks, RVs, motorcycles, powersports and light-duty diesel applications.

• Works with ethylene- and propylene-based antifreeze formulations
• Safe for mixed coolant systems and various coolant colors
• Use in gasoline, diesel, and many powersports cooling systems

How do I use one 16 oz bottle — how much cooling system does it treat?

Application is simple: pour the recommended amount into the cooling system with the engine cool. Each 16 oz bottle treats cooling systems from about 12 to 20 quarts, so dosage depends on your vehicle’s total coolant capacity.

• Add to radiator or overflow when engine is cold
• One bottle treats 12–20 quart cooling systems
• No need to flush existing antifreeze unless contamination is present

Who this is for: Hy-Per Lube HPC100-3PK Super Coolant is aimed at drivers and technicians who need a convenient, concentrated additive to improve cooling performance and corrosion protection without changing their existing antifreeze. It’s a practical choice for daily drivers experiencing high operating temperatures, classic cars and hot rods where mixed-metal corrosion is a concern, fleet and heavy-duty vehicle owners seeking added protection, and anyone wanting an easy-to-add treatment that helps maintain water-pump seals and reduce overheating risk. Made in the USA and sold as a three-pack, it’s also economical for multi-vehicle households or professional shops that perform frequent maintenance.