How are fluid levels checked in your car?

The driving test is the last step of getting a driving license. However, you’ll need to know more than just the traffic rules and how to drive safely; you’ll also need to know what’s under the bonnet of your car. Westwing Motors can help you with Pre-NCT check and preparation in Dublin.

Engine oil level checked

The examiner may ask you where your engine oil is located and how you would check the oil level. In this case, you should indicate where the dipstick and the cap for the engine oil tank are located. The dipstick often has a bright colour, usually yellow, with some type of handle on the visible end to help you grab it.

To check the engine oil level, the first step is to remove the dipstick and clean it. Then you should reinsert it and take it back out again to check where the oil mark is, which should always be somewhere between the minimum and maximum lines. You should also mention that to accurately measure the level of the different fluids, the car must be parked on a level surface.

Oil level is one thing, but its condition is equally important. To check it, you’re going to have to get your hands dirty. Smear the oil on the dipstick between your fingers. It should feel slick and smooth – if you notice any particles or grittiness, components are likely wearing down, which is a major issue.

How are fluid levels checked in your car?
How are fluid levels checked in your car?

How are fluid levels checked in Coolant


The coolant reservoir is easily identifiable because the coolant typically has a bold, striking colour – either orange, yellow, green, blue or pink. It comes with a screw cap because it must properly pressurise the system and when the liquid reaches a high temperature, it also sets off a warning light. 

To check the coolant level, simply look at one side of the tank. The coolant should be in between the minimum and maximum marks or reach the line if there is only one mark. During your test, you can also mention that before unscrewing the cap, you must first wait for the engine to cool down to avoid burning yourself. If you don’t have any coolant on hand, you can add distilled water, but never tap water.

How to check Brake fluid level

You will be able to identify the brake fluid reservoir because the cap has a warning indicator, as well as a symbol associated with the brakes. Brake fluid is usually yellow. The brake fluid level is easily checked; you just need to make sure that it’s between the minimum and maximum lines.

You can also mention that, in addition to the brake fluid level, it’s important to check its colour. It should be slightly translucent and yellowish, because when it acquires a brown hue, it needs to be changed.

How to check windscreen washer fluid level

The cap on the windscreen washer reservoir usually has an icon depicting a jet of liquid, so it’s not difficult to identify. There are no external markings that indicate the minimum and maximum levels, so you will simply need to explain that you would remove the lid to visually check the level.

Also, you should specify that it’s important to check the windscreen washer fluid level regularly, especially before taking a long road trip. 

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