Choosing the correct engine oil for your car.

Choosing something like engine oil for your car can be overwhelming when you have a plethora of options in front of you. Not only there are different brands to choose from, but every gallon has a different rating on them. Thus, let’s explore through this sea of bazillion oils and find out what is the correct engine oil for your car.

What exactly is engine oil?

Engine oil is mainly a lubricant. It runs through your motor and makes sure to protect the moving parts in them so they do not rub together. Engine oil is a very essential element in any moving vehicle to provide both smoothness and protection of the engine. If there is a shortage of lubrication in the engine, the moving parts might shave metals inside the block and might as well seize it completely. Thus, it’s very important to keep the levels normal and check the oil frequently.

Explaining ratings

“Thin oil does not always mean good oil.”

Now that you know what engine oil is, you will often see different ratings on the gallons you buy from the market. It’s usually two sets of numbers like 10W-40, 20W-50 or anything like that but, dealing with different numbers. These sets of numbers mainly tell you the viscosity (the measure of how thick or thin your oil gets depending on the situation) of the oil you are dealing with.  The first number tells you the viscosity when your oil is cold. The lower the number the easier is to get a cold start. The later numbers indicate the thinning rate at hotter temperatures. For example, if you are running 10W-40 in your car, it’s going to thin out quicker than 20W-40 oil. But thin oil does not always mean good oil. It all narrows down to the climate you are living in. Here in Bangladesh, it’s better to use thicker oil because it bears a hotter climate and low viscosity oil may thin out quickly.

Motor oil and CNG

“Engine oils advertised as specialized oils made for CNG running cars seems to be just another hollow marketing strategy.”

In Bangladesh, most cars are run on CNG. So far though, there is no exact oil for cars running CNG, and the engine oils advertised as specialized oils made for CNG running cars seems to be just another hollow marketing strategy. So far, most CNG running cars run 20W-50 oil as CNG is a dry fuel and it does not provide lubrication as regular octane does. Thus thicker oil ensures an extra cushioning for your con rods and pistons and makes sure that everything is moving seamlessly.

Basic things to know when to buy engine oil.

Now there are three types of oil available on the market; Mineral, Semi-Synthetic, and fully synthetic oil. If you are using mineral oil, anywhere between 2500-3000 km is a good time to change your oil. Semi-synthetic oils last up to the 4000 km mark and Synthetic oils go for about 5000km easily. Always ensure to check your oil every two-three days with the dipstick of your car. Always check the level of your oil when the engine is cold and whenever it’s time to change the oil, change it when the engine is cold and the oil is dropped in the pan to ensure it is not overfilled.