10 Best Radiator Flush Cleaner of December 2025

• 2-in-1 formula designed for light flushing and heavy-duty cleaning
• Cleans cooling systems to help prevent overheating
• Non-toxic, non-acidic formula is easy-to-use and safe for all cooling system metals
• Effectively removes heavy deposits by drawing metal oxides into the solution
• Strong enough to help restore maximum cooling system efficiency

Prestone

• Removes rust and scale from automotive engines, radiators and water jackets
• Cleans and unclogs stream cleaner coils and broiler tubes
• Not for use in aluminum radiators
• Suggested Applications: Engines, radiators, water jackets, industrial maintenance applications

Permatex

• Flushes and Cleans Radiators
• Increase Performance

Liqui Moly

• Eliminates Damaging Coolant Gels
• Reduces Operating Temperatures
• Neutralizes Acids That Cause Corrosion
• Helps Prevent Formation of Scales / Deposits
• Hy-per Lube Super Flush removes coolant gels and neutralizes acids in the cooling system. It cleans the entire cooling system preventing overheating and corrosion

Hy-Per Lube

• Remove rust deposits and oily residue
• Helps maximize cooling system efficiency
• Intended for cars with heavier build ups of rust and radiator and heater core deposits
• A strong chelating compound binds rust and other corrosion deposits to help flush them out

Prestone

• Single Quantity
• No Core Charge Req.
• Weight: 0.8lbs

Liqui Moly

• 2-in-1 cooling system cleaner dissolves corrosion and removes grease
• Eliminates oil and fuel contamination and restores cabin heat
• Strips away corrosion by-product from metal surfaces without causing damage
• Helps prevent overheating, a major cause of engine failure
• Safe for all antifreeze/coolants, metals, gaskets, hoses, and plastics

Prestone

• THEROCURE BY Evapo-Rust, cures engine overheating by removing the rust from your cooling system!
• THERMOCURE restores the engine ability to transfer heat to the coolant allowing engines to run cooler and last longer.
• Non-toxic Biodegradable Non-corrosive Safe on skin and eyes No fumes or bad odors Contains no acids, bases, solvents, or VOCs Safe on other metals, rubber, plastic, wood, and glass
• THERMOCURE removes rust scale and deposits from radiator, water pumps, water jackets, and engine blocks and heads.
• THERMOCURE Uses the latest technology in rust and corrosion removal to totally revitalize automotive cooling systems.

Thermocure

• 2-in-1 formula designed for light flushing and heavy-duty cleaning
• Cleans cooling systems to help prevent overheating
• Non-toxic, non-acidic formula is easy-to-use and safe for all cooling system metals
• Effectively removes heavy deposits by drawing metal oxides into the solution
• Strong enough to help restore maximum cooling system efficiency

Prestone

• Specially formulated coolant flush works well in all vehicles
• Improve performance
• Extends Vehicle Life 
• Advanced Cleaning Power 
• Concentrated Formula

BlueDevil Products