It can be frustrating, confusing and even overwhelming to figure out which engine oil is the right one for your vehicle. A wrong choice can damage your engine and affect its performance.
In this quick guide, we will explain what engine oil is, why your car needs it, what options are available (and how to choose the right one) and what happens if you choose the wrong engine oil.
What’s The Purpose Of Engine Oil?
- Engine oil reduces the friction between various components of your engine. It ensures your engine functions smoothly and that no parts rub harshly against each other.
- Engine oil neutralises the acids produced during the combustion process and prevents corrosion.
- Engine oil also ensures that your engine block is clean and sludge free.
The Types Of Engine Oil
You will find different types of engine oils available in stores, including the following main types of engine oil:
- Synthetic motor oils contain high-performing chemical additives and have more uniform molecules and fewer impurities. Synthetic engine oil also provides better high-temperature and low-temperature performances.
- Synthetic blend motor oils are mixtures of conventional base oils and synthetic oils. They have added resistance to oxidation and provide excellent low-temperature performance.
- High mileage motor oils are for modern vehicles with 120,000 kilometres on the odometer. Vehicles with newer engine designs can benefit from high-mileage oils. These oils have additives and formulations that help reduce oil burn-off and prevent leakage.
- Conventional motor oils are cheaper and better suited for vehicles with older engines. They are basic crude oils that can be modified in a range of viscosity grades and quality levels.
Which Is The Right Option For Your Vehicle?
When selecting an engine oil, note the labels on the container. The symbol on the left will indicate if the oil has passed all the necessary service tests. On the right-hand side – there will be an API doughnut providing the SAE viscosity number. The recommended oil weight on this label will be in a standard format, like 10W-30 as determined by the Society of Automotive Engineers (SAE).
Here, the number before W refers to the oil viscosity at 00F. Viscosity is the oil’s resistance to flow and determines the lubrication the oil provides to the engine’s moving parts.
If the viscosity is low, the oil is thinner. If the viscosity is high, the oil is thicker and provides better lubrication. But if the oil is too thick, it can result in energy loss and increased fuel consumption.
To find the right engine oil, start with your vehicle’s owner’s manual. It will have information about the recommended oil for your vehicle. You can also consult a mechanic or service centre if you are still unsure.