5 Essential Car Fluids You Should Check Regularly

Just like staying hydrated keeps your body running smoothly, maintaining your vehicle’s fluid levels is vital to keeping your car in top shape. From engine performance to braking and visibility, your car relies on five essential fluids to operate safely and efficiently.

Here’s your quick guide to the car fluids you should monitor regularly to avoid unexpected breakdowns and extend the life of your vehicle.

1. Engine Oil: Your Car’s Lifeblood

Engine oil keeps all the moving parts inside your engine lubricated, reducing friction and preventing overheating. Without it, your engine could seize or suffer major damage.

How to Check:

• Let the engine cool down first.
• Remove the dipstick, wipe it clean, reinsert it, then pull it out again.
• Oil should be golden and smooth, not thick or dark.

Tip: Check your engine oil every few weeks, especially before long drives.

2. Brake Fluid: Crucial for Stopping Power

Your braking system depends on brake fluid to create the hydraulic pressure that activates your brakes. Unlike other fluids, brake fluid doesn’t get “used up,” so a drop in level usually signals a problem.

Signs to Watch For:

• Fluid levels dropping suddenly.
• Spongy or unresponsive brakes.

If brake fluid is low, it could indicate a leak—get it checked immediately for safety.

3. Transmission Fluid: Smooth Gear Shifts

Transmission fluid lubricates the transmission components and ensures smooth, responsive gear changes. Over time, it can degrade or become contaminated.

How to Check:

• Check while the engine is warm and running (see your owner's manual).
• Clean fluid is red or light brown; if it’s dark or smells burnt, it’s time to change it.

Note: Not all vehicles have dipsticks for transmission fluid—some need a mechanic to check.

4. Coolant: Keeps Your Engine from Overheating

Coolant (also called antifreeze) circulates through your engine to regulate temperature, especially during hot or cold weather. Low coolant levels can cause overheating, especially during long drives.

How to Check:

• Only open the radiator cap when the engine is completely cool.
• Top up using the correct coolant/water mix as per your vehicle’s specifications.

Tip: Check coolant levels every few months or before any road trip.

5. Windscreen Wiper Fluid: Clear Vision, Safe Driving

Often overlooked, wiper fluid is essential for maintaining clear visibility, especially in rain or dusty conditions. It helps remove dirt, bugs, and road grime without leaving streaks.

Why It Matters:

• Improves visibility in bad weather.
• Prevents windshield glare from sun or headlights.

Use a dedicated windscreen cleaner rather than plain water for the best results.

Need a Fluid Check? Let the Experts Help.

Not sure when you last checked your fluids? No worries—Sunshine Toyota’s service team is here to help. We’ll inspect all critical fluids during your routine maintenance to make sure your car stays safe, reliable, and road-ready.

BOOK A SERVICE and let us take care of your vehicle from the inside out.