Can antifreeze alone be used in a HD engine?

Pure antifreeze actually freezes at a higher temperature and transfers less heat from an engine than a 50% antifreeze/water solution. It’s recommended that antifreeze be mixed at a proper 50% proportion of both water and antifreeze. Concentration levels should not fall below 40% or exceed 65% by volume.

Antifreeze/coolant formulations come in so many different colors. Is there an industry standardization for AFC colors?

Manufacturers use different color dyes for different types of antifreeze/coolants. The American Trucking Associations’ Technology & Maintenance Council (TMC), in its “Recommended Practice RP 351,” proposes: Conventional Low-Silicate (Green); Fully Formulated Ethylene Glycol (Purple/Pink); Fully Formulated Propylene Glycol (Blue); Organic Acid Technology (OAT) (Red).

How does antifreeze/coolant (AFC) protect a cooling system and improve a heavy duty vehicle’s uptime?

Antifreeze/Coolant (AFC) protects heavy duty engines from heat by controlling critical metal temperatures. A quality AFC will provide effective protection from corrosion for all cooling-system metals through a wide range of temperature extremes. Cavitation erosion can shorten engine life span and be a very costly repair. HD AFC must protect from corrosion/erosion through the AFC preventative maintenance life cycle. It is always important to purchase a quality antifreeze/coolant for proper protection.

How does antifreeze/coolant (AFC) protect an engine from cavitation corrosion?

While Quality AFC will provide effective inhibition of corrosion for most cooling system metals through a wide range of temperature extremes, high-heat-rejecting surfaces, such as, cylinder liners are high-heat flux areas where boiling can generate near the metal surface. As vapor bubbles form and collapse, they send a shock wave to the surface of the cylinder liner causing damage, which appears as a circular pit on the surface of the metal. Without the proper protection this damage can eventually lead to coolant entering the combustion chamber resulting in sever engine damage. The erosion of the surfaces can generate products that are transported to other areas of the cooling system, leading to other cooling system parts to fail. If you want to run at optimum performance and protect ALL engine metals from corrosion/erosion, pitting and rusting, it is imperative a quality AFC, such as, Prestone Command® Nitrite Free Extended Life Coolant with Patented Cor-Guard Technology, is utilized at the appropriate change interval.

What is Prestone Command® Heavy Duty Antifreeze/Coolant?

Prestone Command® is the latest antifreeze/coolant innovation from Prestone Products Corporation for the North American heavy duty vehicle market. It is an advanced antifreeze/coolant technology that revolutionizes the world of heavy duty engine protection – Anywhere. Anytime. Any Engine.™

In what formulations is Prestone Command® Heavy Duty Antifreeze/Coolant available?

It is available in four formulations: Prestone Command® Nitrite Free Extended Life Coolant with Patented Cor-Guard Technology (Red), Prestone Command® Heavy Duty Extended Life Antifreeze/Coolant (Red); Prestone Command Heavy Duty Extended Service Interval Antifreeze/Coolant (Purple); and Prestone Command Heavy Duty Nitrite Free Extended Life Antifreeze/Coolant (Yellow). See our products page for full review of our AFC products.

What Differentiates Prestone Command® Nitrite Free Extended Life Coolant with Patented Cor-Guard™ Technology?

The Patented Cor-Guard Technology formulation, which is denoted by the protection shield on the label. Cor-Guard stands for the ultimate guard against corrosion and provides this protection for up to 1,000,000-miles or 20,000-hours for any diesel-powered heavy duty engine. Cor-Guard’s patented formulation protects aluminum and all other engine metals against temperature extremes, pitting, rust, corrosion, scale, and water-pump failure. Cor-Guard is the complete protection for all cooling system components. For more detail Click Here.

What differentiates Prestone Command® Heavy Duty Extended Life Antifreeze/Coolant?

The Extended Life formulation, which is denoted by its red color and labeling, provides 750,000-mile/15,000-hour CAT EC-1 protection for any diesel-powered heavy duty engine. Its patented formula protects aluminum and all other engine metals against temperature extremes, rust, corrosion, scale and water-pump failure.

What differentiates Prestone Command® Heavy Duty Extended Service Antifreeze/Coolant?

The Extended Service Interval formulation, which features purple coloring and labeling, is SCA pre-charged and provides advanced protection from freezing, overheating, cavitation erosion, corrosion, scale and foaming in any heavy duty engine with or without controlled-release filter technology that is used in normal to severe duty cycles and extreme temperature conditions.

Are Prestone Command® Heavy Duty Antifreeze/Coolants available in 50/50 Prediluted formulations?

Yes. All Prestone Command Heavy Duty AF/C is available in both concentrate and prediluted formulations.

Can Prestone Command® Extended Life and Extended Service Antifreeze/Coolants be mixed?

NO, they are different coolant technologies and should not be mixed.

Why should I use Extended Life antifreeze/coolants?

Extended Life antifreeze/coolants are recommended by nearly all heavy duty engine OEMs to help protect the sophisticated cooling systems typically on modern-day heavy duty vehicles. Extended life antifreeze/coolants eliminate routine testing and help keep vehicles in operation longer, all of which help reduce operating costs and maximizes uptime. Find out what Prestone Command Extended Life Coolant you should buy for proper protection Click Here.

Besides CAT EC-1, what other product-performance specifications and requirements does Prestone Command® Extended Life Heavy Duty Antifreeze/Coolant meet or exceed?

Prestone Command® Extended Life Heavy Duty Antifreeze/Coolant meets or exceeds performance requirements of all major engine manufacturers, along with the following specifications: TMC RP-329, ASTM D-6210, ASTM D-4985, ASTM D-3306, SAE 1941.

What performance specifications and requirements does Prestone Command® Extended Service Heavy Duty Antifreeze/Coolant meet or exceed?

It meets or exceeds the performance requirements of all major engine manufacturers, along with the following specifications: TMC RP-329, ASTM D-6210, ASTM D-4985, ASTM D-3306 and SAE 1941.

In what dosage should Prestone Command® Extended Service Heavy Duty Antifreeze/Coolant be used?

For optimum protection against freezing or boilover, a 50/50 mix of Prestone Command® Extended Service Heavy Duty Antifreeze/Coolant and tap water should be used. Concentration levels should not fall below 40% or exceed 65% by volume.

What is the shelf life of Prestone Command® Antifreeze/Coolant?

In its original sealed container, Prestone Command® Antifreeze/Coolants have a shelf life of many years. Even if the product has been opened but not diluted with water, it maintains a shelf life of many years.

Why Are Recommended Antifreeze/Coolant Change Intervals Important?

Today's heavy duty diesel engines are finely tuned instruments designed to go the extra mile … provided they are properly treated and maintained. Proper maintenance also applies to the sophisticated cooling systems, which require antifreeze/coolants specially designed for heavy duty engines. Therefore, it is imperative that drivers and fleet managers adhere to the engine manufacturer's recommended change intervals to maximize the engine's performance and decrease the chance of failure. It's also important to maintain the correct coolant level by topping off regularly with a compatible coolant to ensure your engine remains at the correct temperature … and is fully protected!