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Subaru Coolant: Signs It Is Low and How to Prevent It -

Subaru Coolant: Signs It Is Low and How to Prevent It

Subaru vehicles are known for their reliability, longevity, and exceptional performance. However, like any other vehicle, they are not immune to problems, especially when it comes to the cooling system. One common issue is low engine coolant, which can lead to overheating and costly damage if not addressed promptly.

Today, we will discuss the signs of low coolant in your Subaru and how to prevent this issue from happening:

Signs Your Subaru Has Low Coolant

1. Overheating Engine

One of the most obvious signs of low coolant in your Subaru is an overheating engine. If you notice the temperature gauge on your dashboard creeping into the red zone, this is an indication that your engine is running too hot. This can be caused by a lack of coolant circulating through the system, which is necessary to absorb and dissipate heat.

2. Visible Coolant Leak

If you notice a puddle of green, yellow, or orange fluid beneath your vehicle, you may be dealing with a coolant leak. Low coolant levels can result from a leak in the cooling system, such as a cracked or damaged radiator, a broken hose, or a loose clamp. It is important to address this issue as soon as possible to avoid further damage to your engine.

3. Steam or Smoke from the Hood

Steam or smoke coming from under the hood of your Subaru is another sign of low coolant. This occurs when the coolant is unable to circulate properly, leading to the engine becoming too hot. As a result, the remaining coolant may begin to boil and produce steam or smoke.

4. Sweet Smell

If you notice a sweet smell coming from your vehicle, it could be a sign that your coolant is leaking and evaporating. Coolant has a distinct sweet odor, which can be easily detected when it leaks and comes into contact with hot engine components.

5. Heater Inefficiency

If your Subaru's heater is not providing adequate warmth, it may be due to low coolant levels. The coolant is responsible for transferring heat from the engine to the heater core, which then heats the air that is blown into the cabin. If the coolant level is too low, the heater may not function properly.

How to Prevent Low Coolant Issues

1. Regularly Check Coolant Levels

To prevent low coolant issues, it is essential to check the coolant level in your Subaru regularly. Make sure the engine is cool before checking the coolant level. Locate the coolant reservoir and ensure that the coolant is between the minimum and maximum indicators. If the level is low, top it off with the appropriate coolant as specified in your owner's manual.

2. Inspect for Leaks

Regularly inspect your vehicle for any signs of coolant leaks. Check the radiator, hoses, and clamps for any visible damage or cracks. If you notice any signs of wear or leakage, have the issue addressed by a professional mechanic as soon as possible.

3. Schedule Routine Maintenance

Regular maintenance is crucial to keeping your Subaru's cooling system in optimal condition. Schedule coolant flushes and replacements according to the intervals recommended in your owner's manual. This will help to remove any dirt, debris, or contaminants that may have accumulated in the cooling system, preventing potential leaks and ensuring proper coolant circulation.

4. Monitor Temperature Gauge

While driving, keep an eye on your Subaru's temperature gauge. If you notice the gauge indicating a higher temperature than usual, pull over and allow the engine to cool down. This can help prevent overheating and potential damage to the engine.


Low coolant levels in your Subaru can cause serious problems if not addressed promptly. And, by regularly checking your coolant levels, inspecting for leaks, and scheduling routine maintenance, you can help prevent this issue from occurring and keep your Subaru running smoothly for years to come.

Subimods is the leading supplier of Subaru performance parts, aftermarket parts, replacement parts, and accessories. If you are looking for Subaru cooling products and more, check out what we have to offer!


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