Engine overheating is one of the most common problems mechanics face in their workshops. This issue can take your car out of service and cause permanent damage to the engine. If you hear strange noises coming from your car, notice a hot hood, or smell something burning, or any of these symptoms, you need coolant as soon as possible. But before buying coolant or diesel coolant online, here’s some important information you should know to make an informed decision based on your vehicle’s model and make.
What is coolant?
Before diving into its functionality, it’s important to understand what coolant is. It is a tinted engine coolant compound used to regulate the engine’s temperature. It is mixed with water and added to the radiator. It contains ethylene glycol or propylene glycol, chemical compounds that lower the freezing point and raise the boiling point of water, preventing it from freezing, boiling, or evaporating. Coolant helps dissipate the heat generated during combustion in the radiators. Initially, it comes as a concentrated liquid that must be diluted with water before use. Different vehicles require specific types of coolants, a mixture of coolant and water, and are available in various colors such as pink, blue, and green.
How does coolant work?
It is mixed in a 50/50 ratio with water and poured into a designated reservoir in the car’s engine. It acts as a base fluid that is pumped through the car’s engine to maintain an optimal temperature, even in extreme heat or cold conditions. It is effective up to 275°F (135°C) in hot temperatures and down to -30°F (-34°C) in cold climates. In addition to regulating temperature, coolant lubricates many engine parts, such as the water pump, to prevent damage from friction and overheating. It also protects against corrosion due to its anti-corrosive properties. Maintaining optimal coolant levels improves the vehicle’s lifespan.
When and why should coolant be changed?
Coolant, like any compound, has an expiration date and becomes extremely acidic over time. Engine coolants should be changed after the first 60,000 miles (96,000 km) and then every 30,000 miles (48,000 km). Some engines use long-life coolants that, with a 50-50 mixture of coolant and water, can prevent freezing and boiling under extreme conditions for several years with minimal maintenance. However, coolant loses its rust-inhibiting properties over time, which can cause corrosion and damage the thermostat, radiator, hoses, and other parts of the cooling system. It’s recommended that a mechanic assess the effectiveness of the coolant after some time. If your car has been exposed to severe services like frequent towing or overheating, you should change the coolant every 150,000 miles (240,000 km), regardless of the vehicle’s age or conditions.
Does your car need coolant?
Yes, all cars, whether old or new, need a supply of coolant as soon as the previous one expires. It is essential for the engine to function properly. Without this coolant, radiators can cause permanent damage, such as warped heads, blown head gaskets, and engine failures.
When should you change the coolant?
Warning lights
Remembering maintenance schedules can be tricky, and taking the car to the mechanic takes time. That’s why many vehicles have built-in warning systems that light up to alert the driver when the engine is overheating. This usually indicates that the antifreeze has expired or that the engine’s level is too low. If your engine temperature is extremely hot or cold, consult a mechanic.
Sweet smell
A sweet smell while driving is a sign that the coolant has leaked from the radiator. In this case, the radiator can no longer retain the mixture, so it’s necessary to drain or replace the coolant to avoid further damage.
Starting issues
If you’re having trouble starting your car in extreme weather, check the coolant levels. Sometimes, expensive repairs aren’t necessary—just a quick check and a refill of antifreeze may be all it needs.
Color changes
Although color is not a reliable way to determine the antifreeze’s condition, if the fluid has dust particles or looks rusty, it’s probably no longer effective. After a trip, check the color and opacity of the liquid once the engine is cold. Extract a small amount of the fluid and check its condition.
Reliable solutions for your car
Whether you need essential repairs or just refills for your vehicle, American MFG provides everything you need to keep your car in optimal condition. As one of the most reliable manufacturers of diesel antifreeze, they help keep engines cool and running smoothly, both in summer and winter. Contact them to find the right antifreeze for your vehicle.
