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KOOL-IT™ Supreme Coolant Treatment


KOOL-IT® Supreme Coolant Treatment is chemically engineered to reduce the surface tension of coolant, thus allowing it to more deeply penetrate metal surfaces at vital heat-transfer areas. This decreases operating temperatures and significantly reduces the possibility of engine overheating.

Due to its unique chemical composition, KOOL-IT is very effective in preventing damage from electrolysis, corrosion, and pitting. The overwhelming majority of failures associated with aluminum radiators found in most newer vehicles are due to corrosion. This corrosion is a result of deficient chemical protection within the coolant.

KOOL-IT is the easiest and most cost effective way to protect a radiator or heater core (and prevent warranty claims) from deterioration and damage that can lead to system failure. Compatible with all types of antifreeze, Kool-It provides the type of total cooling system protection required for today’s modern cars and trucks.

The #1 Cause of Roadside Failure is Coolant System Related!

  • Protects all metals from chemical electrolysis
  • Provides unsurpassed cooling system corrosion protection
  • Enhances heat transfer and reduces operating temperatures
  • Prevents deposits and contamination which lead to overheating
  • Reduces water pump, impeller and intake manifold pitting
  • Prevents warranty claims
  • Extends coolant life up to five years
  • Compatible with all types of antifreeze


Source: National Automotive Radiator Service Association

available sizes

directions for use


Never remove radiator cap if engine is still hot. With engine cool, pour KOOL-IT into radiator, start engine, turn heat on high, and run for 10 minutes. This opens the thermostat and circulates KOOL-IT through the entire system, providing full protection to the heater core, radiator core, water pump, cylinder heads, block, and intake manifold. Always maintain a minimum of 15% antifreeze in cooling systems of street driven vehicles with A/C.

Ratio: One pint treats cooling systems of 12-20 quarts. Systems over 20 quarts add one ounce of KOOL-IT for each additional quart.

Frequency: Add 1 pint every year or 30,000 miles, whichever comes first. After 5th consecutive year, drain, flush, and refill cooling system.

Straight Water Applications: It is recommended that 50% more product be added in order to achieve full corrosion protection.

Diesel Applications: It is recommended that twice the amount be added in order to achieve full nitrite protection.

Results from 7,000 hour coolant test

A) Straight water with antifreeze (50/50)
B) Straight water with antifreeze (50/50) and KOOL-IT®

Note the separation of the water and antifreeze in bottle A. This shows the contamination formed from rust and silicates.

See how KOOL-IT outperforms and why it is the #1 Choice of Professionals.

kool it A&B

Also available! KOOL-IT Radiator Flush & Protect Performance Pack P/N 98001

Contains KOOL-IT Supreme Coolant Treatment and KOOL-IT Radiator Flush P/N 95020


Lubegard Product Catalog

Lubegard Spanish Product Catalog

2019 LUBEGARD Catalog

2019 LUBEGARD Catalogo de Productos

Customer Testimonial Booklet

KOOL-IT™ Supreme Coolant Treatment - Product Data Sheet


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