Best Cyclops Instruments in 2026

Premium quality accurate and Reliable: Our antifreeze refractometer is designed to provide precise and dependable readings, ensuring accurate measurements of the freezing point and concentration of antifreeze solutions.

Easy to Use: With its user-friendly design, our refractometer allows for quick and effortless testing. Simply place a few drops of the antifreeze sample on the prism, close the cover, and read the results through the eyepiece.

Wide Range of Applications: Our refractometer is not limited to antifreeze solutions. It can also be used to measure and monitor the concentration of other industrial fluids like glycol-based coolants, battery electrolytes, and windshield washer fluids.

No.1 selling brand of gas-line antifreeze and water remover

Safe for use in all 4-cycle engines including fuel injected engines

Prevents gas-line freeze up

Formulated to replace the OEM fluid in Asian make vehicles such as Toyota , Lexus , Scion and others requiring a red, silicate free HOAT antifreeze/coolant

5 year/150, 000 mile . Silicate-free, long-life, phosphate Hybrid Organic Acid Technology chemistry

The long life formula provides protection for all cooling system metals from rust and corrosion. The silicate free, borate free formula helps protect against harmful scale and deposits

Engine Ice hi-performance coolant is biodegradable, phosphate free and non-toxic, typically reduces operating race temperatures and effectively keeping boil over temperatures to 256° Fahrenheit or less and freeze-up protection to -26° Fahrenheit

With an average reduction in operating temperatures of 10° Fahrenheit - 20° Fahrenheit Engine Ice is perfect for racing or street, motorcycle or auto, ATV or snow machine

Engine Ice hi-performance coolant is legal in CCS and ASRA road racing and permitted at many tracks around the world. Easy to Use – Premixed with deionized water for out-of-the-bottle use.

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all cooling system components

DESIGNED FOR EUROPEAN VEHICLES: Recommended for use with BMW, Jaguar, Volvo, and other European vehicles that require a BLUE Silicate-Enhanced Hybrid Organic Acid Technology (Si-HOAT) formula

UNSURPASSED FREEZE PROTECTION AND ANTI-BOIL PERFORMANCE outperforms industry standards

ORGANIC ACID TECHNOLOGY RESISTS RUST, SCALE & CORROSION while protecting all cooling system metals (including aluminum)

HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish

The formulation is designed for both gasoline and diesel engines

Its lower-silicate, reduced pH, phosphate free European technology protects all cooling system metals, including aluminum, from corrosion

ZEREX G-05 is a nitrite containing coolant designed to protect diesel engine cylinder liners from cavitation. It contains deposit control additives for protection from hard water deposits and scale

5 year/150, 000 mile . Silicate-free, long-life, phosphate Hybrid Organic Acid Technology chemistry

Formulated to replace the OEM fluid in Asian make vehicles such as Honda, Nissan, KIA, Hyundai and others requiring a blue, silicate free HOAT antifreeze/coolant

The long life formula provides protection for all cooling system metals from rust and corrosion. The silicate free, borate free formula helps protect against harmful scale and deposits

ZEREX DEX-COOL antifreeze coolant is approved by General Motors to the GM 6277M specification

ZEREX DEX-COOL antifreeze coolant contains no phosphates, silicates, borates, nitrates, amines and nitrites

Valvoline ZEREX DEX-COOL antifreeze coolant is a patented* carboxylate formulation with a service life of up to five years or 150,000 miles

The formulation is designed for both gasoline and diesel engines

Its lower-silicate, reduced pH, phosphate free European technology protects all cooling system metals, including aluminum, from corrosion

ZEREX G-05 is a nitrite containing coolant designed to protect diesel engine cylinder liners from cavitation. It contains deposit control additives for protection from hard water deposits and scale

Specially formulated for long service intervals, the coolant can last up to 5 years or 150,000 miles. (Maintenance needs vary with different uses and driving conditions. See your Owner's Manual for more information).Fit Type: Vehicle Specific

Provides effective long-term anti-corrosion support by protecting brass, cast iron, steel, solder, and copper components. Also provides superior high-temperature protection for aluminum components.

Non-silicate formula retains excellent heat transfer characteristics for improved water pump life

See product description below for vehicle fitment or to verify fitment for your specific vehicle, please contact us, and provide us with your VIN that can be found on your vehicle or your insurance card.

QUICK FILL: The 50/50 Premix formula allows for quick fill and is safe for use with hard water

OUTSTANDING PROTECTION: 50/50 Premix Extended Life Antifreeze is specifically engineered for Polaris 2 and 4-cycle engines to provide extreme temperature boil-over protection and freeze protection down to -34° F (-37° C)

CONTAINS ALUGARD PLUS FOR COMPATIBLITY WITH ALL ETHYLNE GLYCOL-BASED COOLANTS in automobiles and light duty trucks.Fit Type: Universal

FIGHTS CORROSION, SCALING AND RUST while protecting all cooling system metals (including aluminum)

HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish

Provides protection down to -34 degree fahrenheit

Helps prevent rust and corrosion

A patented organic acid corrosion inhibitor package to provide extended engine protection against rust and corrosion

Provides protection down to -34 degree fahrenheit

Helps prevent rust and corrosion

A patented organic acid corrosion inhibitor package to provide extended engine protection against rust and corrosion

Contains a bittering agent

Many products require vehicle-specific fitment

View the Compatibility table to ensure the part fits your year, make, model and submodel

Please reference the submodel information located on the far left within the Compatibility table under inchNotes inch

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all cooling system components

DESIGNED FOR EUROPEAN VEHICLES: Recommended for use with certain years of Audi, Mercedes, Porsche, VW, and other European vehicles that require a VIOLET silicate-enhanced organic acid technology (Si-OAT) formula

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components

DESIGNED FOR ASIAN VEHICLES: Recommended for use with Lexus, Scion, and Toyota vehicles that require a RED/PINK Phosphate-Enhanced Organic Acid Technology (POAT) formula

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components

DESIGNED FOR ASIAN VEHICLES: Recommended for use with Acura, Honda, Infiniti, Mitsubishi, Nissan, Subaru, and Suzuki vehicles that require a BLUE Phosphate-enhanced Organic Acid Technology (POAT) formula

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components

DESIGNED FOR NORTH AMERICAN VEHICLES: Recommended for use with Ford, Chrysler, and GM vehicles that require an orange organic acid technology formula

Engine Ice Hi-Performance Coolant is biodegradable, phosphate free & non-toxic; typically reduces operating race temperatures and effectively keeping boil over temperatures to 256 Degree Fahrenheit or less and freeze-up protection to -26 Degree F

With an average reduction in operating temperatures of 10 Degree Fahrenheit - 20 Degree Fahrenheit Engine Ice is perfect for racing or street, motorcycle or auto, ATV or snow machine

Engine Ice Hi-Performance Coolant is legal in CCS and ASRA road racing and permitted at many tracks around the world

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components

DESIGNED FOR ASIAN VEHICLES: Recommended for use with Lexus, Scion, and Toyota vehicles that require a RED/PINK Phosphate-Enhanced Organic Acid Technology (POAT) formula

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components

DESIGNED FOR NORTH AMERICAN VEHICLES: Recommended for use with Ford and Chrysler vehicles that require Gold hybrid organic acid technology (HOAT) formula

UNSURPASSED FREEZE PROTECTION AND ANTI-BOIL PERFORMANCE outperforms industry standards.Fit Type: Universal

PHOSPHATE ADDITIVES SAFEGUARD AGAINST CORROSION, SCALE AND RUST while protecting all cooling system metals (including aluminum)

HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish

1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.

PROTECTS: Advanced formulation prevents rust & corrosion protecting all cooling system components

DESIGNED FOR EUROPEAN VEHICLES: Recommended for use with certain years of Audi, Fiat, Saab, and other European vehicles that require a PINK Silicate-Free Organic Acid Technology (OAT) formula

HEAVY DUTY FORMULA to meet the harsher demands of heavy-duty diesel engines such as Cummins, DDC, MACK, Navistar, Paccar and Volvo

ORGANIC ACID TECHNOLOGY RESISTS CORROSION, SCALE AND RUST to protect diesel engines and ensure your antifreeze flows and functions properly.

PROTECTS ALL COOLING SYSTEM METALS INCLUDING ALUMINUM and won’t harm gaskets, hoses or original vehicle finish

Content 150 ml

Suitable for aluminum radiators

Permanently and reliably seals hairline cracks and minor leaks

Antifreeze Coolant, 1 gal., 50/50 - AF2100

Formulated to work with All Vehicles. Works with all fluid colors; All OAT, POAT, HOAT & IAT.

Longer Engine Life Guarantee - 10 Years, 300,000 mile Extended life formula

Protects against boil over to 265°F and freezing to -26°F

Reduces engine wear and inhibits corrosion

Safe for all radiators and all gas/diesel engines