Why do Subarus burn coolant?

Why Subarus Burn Coolant
Subarus are known for burning coolant, particularly the older generation 2.5L engines (1999-2011). The most common issue leading to coolant burning in these engines is a head gasket leak on the left side. This can result in the engine burning up coolant over time, leading to a decrease in the coolant level.
The specific design of Subaru engines, particularly the horizontal design, can contribute to this issue. The horizontal design keeps the head gaskets always submerged in coolant, which can lead to coolant burning.
It’s important to note that the type of coolant used in Subarus is also crucial. Subarus require a special mix of coolant due to the head gasket design. Contaminated coolant, typically from minerals in tap water, can lead to head gasket issues over time. Therefore, using the correct coolant mix is essential for maintaining the health of the engine.
In summary, the burning of coolant in Subarus, particularly in the older generation 2.5L engines, is primarily attributed to head gasket leaks and the specific design of Subaru engines. Additionally, using the correct coolant mix is crucial for preventing potential head gasket issues.

Why is my Subaru low on coolant?

If you notice that the coolant level is frequently low, it could be a sign of a coolant leak that needs to be repaired. Use the recommended coolant: Always use the manufacturer’s recommended coolant type and mix it according to the manufacturer’s specifications.

Is it common for coolant to get low?

Providing that the engine is running well, with no leakages or damage, you can expect a coolant loss of 0.25% every four to six months. This means a loss of two to three ounces a year is completely normal.

How long does coolant last in a car Subaru?

How often should you change coolant in a Subaru? Typically, you should have your Subaru coolant flush completed each 30,000 miles or each two years. There are some instances where your vehicle can go without a flush for a longer period of time.

Can coolant just get low?

The two main causes of low coolant are a leak in your car’s coolant system and failing to top off your car’s coolant levels properly. Low coolant makes it harder to drive in hot weather and sub-zero temperatures. Low coolant also causes your engine to burn fuel more quickly.

How much does it cost to fix burning coolant?

While the average coolant leak repair cost when hiring a pro specializing in local air conditioning repair is between $150 and $2,000 with everything from the service call to parts and labor included, homeowners attempting to fix a coolant leak on their own can pay around $800 to correct common issues.

Why is my Subaru using so much coolant?

The most common sources of coolant leaks in Subarus are the radiator, hoses, water pump, and head gasket. Replace the faulty component: Once you’ve identified the source of the leak, you’ll need to replace the faulty component. If it’s a hose that’s leaking, you’ll need to replace the hose.

How much coolant loss is normal?

How much coolant loss is normal? Providing that the engine is running well, with no leakages or damage, you can expect a coolant loss of 0.25% every four to six months. This means a loss of two to three ounces a year is completely normal.

How long does Subaru coolant last?

Your Owner’s Manual can tell you what the maintenance interval might be for your specific car, but if you have conventional coolant, your first coolant flush might happen at 45,000 miles and then every 2 years and 30,000 miles after that.

Why does my car keep burning through coolant?

Your car should never “burn” coolant. If coolant is disappearing, you have either an internal leak or an external leak. If it’s internal, most likely your headgasket is faulty which is not an inexpensive fix. If it’s external, it could be as simple as a bad hose or fitting or maybe the water pump bearings.

Are Subarus known for overheating?

If your Subaru overheats, you’re not alone. While Subaru has a long history of making sturdy, reliable vehicles, the head gasket on some models is a weak spot. The most commonly effected Subarus are Impreza, Legacy, and Outback models produced between 1999 and 2004.