Your vehicle’s cooling system plays a critical role in keeping the engine operating at the proper temperature. Without enough coolant, your engine can overheat, leading to costly repairs and leaving you stranded.
Fortunately, checking your coolant level is quick and easy. Whether you’re preparing for a summer road trip or simply staying on top of routine maintenance, knowing how to inspect your coolant is an important part of vehicle ownership.
Book a cooling system inspection at Birchwood to help keep your vehicle running at its best.
Quick Answer
To check your coolant level, locate the coolant reservoir under the hood and make sure the fluid sits between the “MIN” and “MAX” markings while the engine is cold. If the level is low, consult your owner’s manual to determine the correct coolant for your vehicle before topping it up.
What Does Coolant Do?
Coolant, also known as antifreeze, helps regulate your engine’s temperature. It absorbs excess heat from the engine and transfers it through the radiator to prevent overheating.
A healthy cooling system also:
- Prevents Overheating: Keeps the engine at a safe operating temperature.
- Protects Against Corrosion: Helps prevent rust and corrosion inside the cooling system.
- Provides Year-Round Protection: Despite the name “antifreeze,” coolant protects your engine in both hot and cold weather.
Keeping the proper coolant level is essential for reliable engine performance.
How to Check Your Coolant Level
Checking your coolant only takes a few minutes and should always be done when the engine has completely cooled.
Step 1: Park on a Level Surface
Park your vehicle on level ground and turn the engine off. Allow the engine to cool completely before opening the hood.
Step 2: Locate the Coolant Reservoir
Look for the translucent plastic reservoir near the radiator. Most reservoirs have “MIN” and “MAX” markings on the side.
Step 3: Check the Coolant Level
The coolant should sit between the minimum and maximum marks.
If the level is below the minimum mark, additional coolant may be required.
Step 4: Inspect the Coolant
While checking the level, take a quick look at the coolant itself.
Healthy coolant should appear clean and brightly coloured (depending on the type used in your vehicle). If it appears rusty, dirty, or contains debris, it’s a good idea to have the cooling system inspected.
Can You Add Coolant Yourself?
In many cases, yes, but only if you’re using the correct type of coolant specified by your vehicle manufacturer.
Before adding coolant:
- Never open the radiator cap while the engine is hot.
- Check the coolant colour: Manufacturers often use different coloured coolants based on the type and formulation required for their vehicles.
- Follow your owner’s manual: Always confirm the recommended coolant specification rather than choosing coolant based on colour alone.
- Avoid mixing coolant types: Different formulations shouldn’t be mixed unless approved by the manufacturer.
If you’re unsure which coolant your vehicle requires, consult your owner’s manual or a qualified technician before topping it up.
Signs Your Coolant May Be Low
Low coolant isn’t always obvious until problems begin to develop.
Common warning signs include:
- Engine temperature gauge running higher than normal
- Temperature warning light
- Heater not producing warm air
- Visible coolant leak under the vehicle
- Sweet smell coming from the engine compartment
If you notice any of these signs, have your vehicle inspected as soon as possible.
Why Is My Coolant Level Low?
Coolant naturally expands and contracts as temperatures change, but a consistently low coolant level may indicate a problem.
Possible causes include:
- A leak in the cooling system
- A worn radiator hose
- A leaking water pump
- A damaged radiator
- A faulty reservoir cap
A technician can inspect the cooling system and identify the source of the problem.
When Should You Have Your Cooling System Inspected?
Regular inspections can help prevent unexpected breakdowns.
Consider booking a cooling system inspection if:
- Your coolant level drops repeatedly.
- Your engine begins running hotter than usual.
- You notice coolant leaks.
- The coolant appears dirty or contaminated.
- You’re preparing for a long summer road trip.
Routine maintenance helps keep your engine protected throughout the year.
Frequently Asked Questions
Can I check my coolant when the engine is hot?
No. Always wait until the engine has completely cooled before checking the coolant level or opening the cooling system.
How often should I check my coolant?
Checking your coolant every few months, or before a long road trip, is a good habit. Always follow the maintenance schedule in your owner’s manual.
Can I top up coolant with water?
Some manufacturers allow distilled water in an emergency, but the correct coolant mixture should be restored as soon as possible. Always refer to your owner’s manual.
Why does my coolant keep getting low?
If you’re adding coolant regularly, your vehicle may have a leak or another issue within the cooling system. It’s best to have it inspected by a technician.
What colour should coolant be?
Coolant comes in several colours, including green, orange, pink, blue, and yellow. The colour depends on the formulation, so always use the type recommended for your specific vehicle.
Can low coolant damage my engine?
Yes. Driving with low coolant can cause the engine to overheat, potentially resulting in severe and expensive engine damage.
Conclusion: A Simple Check That Can Prevent Major Repairs
Checking your vehicle’s coolant level only takes a few minutes, but it can help prevent overheating and protect your engine from unnecessary wear.
Whether you’re heading out on a summer road trip or simply staying on top of routine maintenance, making coolant checks part of your regular routine can help keep your vehicle performing at its best.
If you’re unsure about your coolant level or suspect a cooling system issue, the service team at Birchwood is here to help.
