What Is The Best Coolant For A Diesel Engine?

The nitrite-based additive in ZEREX G-05 is designed to protect the cylinder liners of your diesel engine from cavitation erosion, which is a typical type of erosion in diesel engines.

Do you need special coolant for diesel engines?

In a diesel engine, the coolant system is one of the most ignored preventive maintenance items.

Engine coolant maintenance is equally as crucial as changing the oil in your car. In fact, in a diesel engine, the coolant condition may be much more critical than in a gasoline engine.

One of the most common causes of neglect is that owners don’t realize how critical it is to check the coolant’s condition on a regular basis. The state of the coolant is critical to the engine’s lifetime. Antifreeze-coolant on the market now not only protects against freezing in the winter, but also helps protect diesel engines from common cavitation problems.

What kind of antifreeze does a diesel truck take?

All heavy duty diesel trucks should use FVP 50/50 Prediluted Extended Life Heavy Duty Antifreeze/Coolant. On and off the road, heavy-duty engines are used.

What color is diesel engine coolant?

When it comes to engine maintenance, coolant is just as crucial as oil. Even if today’s coolant formulas are more advanced than ever, cooling system performance is still responsible for 50% of all early engine failures. Cooling systems are frequently overlooked, yet unresolved issues with the coolant can quickly escalate into far more serious difficulties with engines, transmissions, and hydraulics.

Depending on the type of formulation and brand, coolants come in a spectrum of hues.

There is currently no industry standard that manufacturers must adhere to while selling their goods. As a result, coolant system upkeep can be more difficult.

Coolant Colors

Selecting the proper engine coolant helps extend the life of your heavy-duty engine. The manufacturer adds coolant to a new vehicle based on the engine’s specs. Identifying the coolant that is currently in your cooling systems, on the other hand, might be a lot more complicated.

Water and coolant are both transparent liquids. For light-duty and heavy-duty engine cooling systems, coolant/antifreeze color was typically painted green until recently. Manufacturers began to use distinct dye colors to identify coolant kinds when long life (LLC) and extended life coolants (ELC) were introduced. Color also aids in the detection of coolant system leakage.

  • Conventional low-silicate coolants used in vehicles and light-duty trucks are known as inorganic acid technology (IAT). Supplemental coolant additives (SCAs) for heavy-duty engines are included in IATs to protect the engine against pitting and corrosion. The color is primarily brilliant green.
  • Organic Acid Technology (OAT) is a coolant that uses organic acids and has a long service life. OAT coolants are suitable for use in diesel engines, both heavy and light-duty, as well as natural gas and gasoline engines. Color: orange or red, although depending on the manufacturer, it can also be yellow, blue, crimson, or dark green.
  • NOAT stands for Nitrited Organic Acid Technology. For engine liner pitting protection, NOAT coolants contain nitrite and, in rare cases, molybdate. The color is usually red.
  • HOAT (Hybrid Organic Acid Technology): These coolants combine the benefits of both IAT and OAT solutions, providing corrosion protection for aluminum parts and rustproofing for iron components. Yellow or orange is the most common color, but it can also be pink, purple, or blue.

As you can see, the type of coolant in a cooling system is not necessarily determined by its color.

Problems with Mixing Colors

Chemical reactions in the coolant reservoir can occur when coolants are mixed. When a green (IAT) and an orange (OAT) are mixed, a brown gel-like sludge forms, which might eventually clog the cooling system.

Also consider red coolants (OAT, HOATs, and NOATs), which can be nitrite or nitrite-free blends. When two red coolants with different blends are mixed, there aren’t enough of the proper additives remaining in the mixed formulation to guard against corrosion, which can drastically diminish engine protection.

Identifying Coolant in Your System

Because a consistent manufacturer-recommended coolant is utilized in single OEM fleets, it may be easier to detect coolant. However, you can see a range of coolants being utilized in mixed fleets and older fleets. Coolant top-offs are virtually always performed outside of standard maintenance schedules, whether the vehicle is new, old, mixed, or single OEM. These flaws make it difficult to tell what is being used, especially because color isn’t always a reliable indication. Do you see a purple liquid in the reservoir? It’s possible that this is a mixture of two separate coolant types.

The engine manufacturer is a good place to start. Confirm your engine’s and situation’s recommended coolant type. Incorporate

Can you use 50/50 antifreeze in a diesel?

Prestone HD 50/50 Prediluted NITRITE FREE Extended Life (ELC) Antifreeze/Coolant is designed to work with any nitrite-free HD Organic Acid Technology (OAT) coolant in any diesel-powered commercial vehicle or stationary engine with aluminum or other metals. Its nitrite-free OAT formulation is based on a concentrated blend of premium long-lasting inhibitors that protect against temperature extremes, rust, cavitation corrosion, scale, and premature water pump failure. Prestone HD 50/50 Prediluted NITRITE FREE Extended Life (ELC) is an antifreeze/coolant concentrate and demineralized water blend that provides protection for up to 600,000 miles/12,000 hours**. Prestone HD 50/50 Prediluted NITRITE FREE ELC can be added to the antifreeze/coolant of any HD commercial or stationary engine when used as specified.

Can you use regular coolant on a diesel truck?

Is It Safe To Use Ordinary Coolant In A Diesel Engine? Light-duty coolant should not be used in heavy-duty engines since it can cause damage. Heavy-duty diesel engines can be protected from corrosion and discolouration by using replaceable liners around each cylinder.

What is the preferred pH level of coolant in a diesel engine?

When the pH of your cooling fluid falls below 7, it causes corrosion in your engine. As antifreeze degrades and sulphates enter the cooling system, your cooling fluid turns acidic. As a result, your liners, cylinder blocks, and heads, as well as the waterways and hoses, corrode. A extremely high pH value is also bad news because it puts your gaskets and softer metal components at danger of harm. As a result, the pH level in an ideal cooling system should constantly be between 8 and 10.

To accomplish this, you’ll need buffers in your cooling fluid to prevent acids or alkalis from forming.

What antifreeze has ethylene glycol?

Low-silicate, ethylene glycol-based multi-purpose coolants, Havoline Conventional Antifreeze/Coolants are available as concentrates or 50/50 pre-diluted formulations. They’re intended for use in automotive engines that require silicates, as well as in heavy-duty diesel engines that require supplemental coolant additives (SCAs).

What is the red antifreeze?

Dexcool is a brand of red antifreeze that lasts longer than other types of antifreeze. Organic acid technology (OAT) was discovered after inorganic acid technology (IAT) (explained below), resulting in the production of various colored antifreeze formulations (mainly orange colored antifreeze formulations were produced by this technology). Later, as a mixture of IAT and OAT, the hybrid organic acid technology (HOAT) was developed. Red antifreeze is produced using this hybrid method. Red antifreeze is more stable than green antifreeze and other older kinds of antifreeze chemicals, and it extends the life of water pumps.