Kool Mist #77 Concentrated Coolant 1 Gallon - Long Life Cooling

In this review of Kool Mist #77 Concentrated Coolant, the bottom line is straightforward: this 1 gallon concentrate is for workshops and shops that need a long-lasting, water-based coolant that stays clear and is safe to handle. The reviewer found the product especially useful for machining aluminum and for flood-coolant setups where keeping parts and tools cold is critical. Its biggest selling point is economical, long life performance that dissolves to a clear solution and resists rust while being gentle on people and equipment.

Key Features

• Dissolves to a clear solution: The concentrate mixes with water to form a transparent coolant that makes chip and surface inspection easier during machining.
• Universal metal compatibility: It is formulated for use in the machining of any metal or alloy across common operations, reducing the need for multiple fluids.
• Safe for people and equipment: The water-based formula has no noticeable smell and is designed to be gentle on operators, machines and workpiece materials.
• Long life and economical: Customers report extended sump life, often 2 years or more, lowering overall operating cost and maintenance frequency.
• Rust resistance: The concentrate helps protect stored parts and tooling from corrosion during routine machining and in the sump.
• Easy to use: Dissolves readily in water so setup and top-up are straightforward for shop technicians.

Who It's For

This coolant is aimed at machine shops, fabrication shops, and maintenance departments that run continuous flood cooling or heavy-duty machining and want a versatile, long-life coolant. It works well for shops that frequently machine aluminum and other alloys and need a clear, water-based solution that does not create strong odors or irritate operators.

It is less suited to specialty applications requiring proprietary extreme-pressure additives or where a non-aqueous fluid is mandatory. Shops that need specialized chemistry for specific exotic metals should evaluate compatibility before relying solely on this general-purpose concentrate.

Pros & Cons

Pros

• Works well as a flood coolant, keeping parts and tools cold to the touch during machining.
• Water-based and low odor, making it comfortable for operators to work around.
• Long sump life and good rust resistance reduce changeover frequency and cost.
• Suitable for all common metals and alloys, simplifying inventory of cutting fluids.

Cons

• Not formulated as a specialty extreme-pressure or non-aqueous fluid, so rare niche tasks may require different chemistry.

Specifications

Product name	Kool Mist #77 Concentrated Coolant
Container size	1 Gallon
Series	#77
Formulation	Water-based concentrate, dissolves to a clear solution
Compatibility	Use on any metal or alloy in any operation
Health and safety	Safe for people, materials and machines; low odor
Additional note	Arbor hole diameter 5/8' in container fitting

Our Verdict

Kool Mist #77 is a practical, economical choice for general machining shops that need a clear, water-based coolant with strong rust protection and long sump life. It is particularly good for aluminum work and flood-coolant systems, offering value through reduced changeouts and gentle handling characteristics. For routine metalworking and maintenance use this concentrate delivers reliable cooling and corrosion control at a modest cost.

Frequently Asked Questions

Can this concentrate be mixed with tap water?
Yes, it dissolves in water to form a clear solution; follow your shop dilution guidelines for concentration and monitoring.

Is it suitable for aluminum machining?
Yes, customers report it works well on aluminum and helps keep parts and tools cold during machining.

How long does the sump typically last?
Many users report sump life of 2 years or more with proper maintenance, which contributes to its economical operation.