Which grade oil is the most suitable for bike engines as a fuel?

Which grade oil is the most suitable for bike engines as a fuel?

Which grade oil is the most suitable for bike engines as a fuel?

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Bike Engine Oil

It is evident that bikes need bike engine oils as a fuel to power them but what is unknown to many is a fact that engine oils play several roles other than just acting as a fuel. Engine oil is used as a multi-purpose tool in the bikes or cars in order to improve their efficiency and elongate life of the vehicle.

Other than acting as a fuel, bike engine oils help in lubrication, fuel economy, cleansing and strengthening the engine. Since it is a multi-tasking fluid, it should be no surprise to one that the bike engine oils should be of an excellent quality. 

Bike engines are built different in different vehicles and one type of engine oil cannot be used to serve all kinds of engines. Therefore, we have different types and grades of engine oils so that they can meet up all the requirements of all kinds of engines.

Types of Bike Engine Oil

Bike engine oils can be broadly classified into the following categories based upon their chemical composition:

  1. Mineral bike engine oil.

This is a very basic category in the entire variety of engine oils. Mineral oils, as the name simply suggests, are composed of simple minerals and they do not constitute any complex chemical compounds. As the molecules in this type of engine oil are very loosely bonded therefore this type of oil cannot be used for any extreme conditions. 

  1. Semi-synthetic bike engine oil.

This category of engine oil is a perfectly balanced combination of natural and chemical compounds so that it can provide sufficient energy to the vehicle.

  1. Synthetic bike engine oil.

It is used by any usual high performance vehicle as it provides maximum lubrication and resistance to high temperatures. For the same reasons, it is the costliest engine oil available in the market. 

Grades of Bike Engine Oil

You must have often come across terms like 5W20, 10W30 etc. while taking a look at the back of the engine oil bottles. These are the different grades of engine oils. Indeed, these are ambiguous and can be easily confused with each other so let us understand this nomenclature and its rules. This will also help us choose the most suitable bike engine oil for our vehicle.

Understanding the Nomenclature

Let us understand all the components of the names of these grades of oils

  • The very first component of the name that we refer to as ‘x’ stands for the viscosity of the engine oil at a non-operational temperature of the bike. 
  • The middle letter that is given as ‘W’ refers to winter.
  • The third component that we refer to as ‘y’ stands for the viscosity of engine oil at a regular temperature at which engine operates.

Viscosity refers to the thickness of the fluid and it is obvious that higher the viscosity more is the resistance to flow and wastage. Lesser the viscosity more is the flow.

Understanding These Components

Upon starting the engine, all the parts of engine start to mesh and work together as a unit almost instantaneously. For this reason, engine oil also needs to be supplied to all the distant parts of the engine almost instantaneously.

This is where we take the component ‘x’ into consideration. Lower is the number of ‘x’ more easily it can flow up to all the distant parts of the engine. Hence, 5W50 is a more efficient grade of engine oil than 20W50 in terms of swiftness. 

It is a well-known fact that engine temperatures rise immensely high when the vehicle is in operation. Liquids have a unique property of thinning out at higher temperatures. Since, engine oils are liquids so it will be a major disadvantage if these engine oils start to thin out at higher temperatures of engine operation.

Now that we cannot control the temperature of the engine, but we can have a thicker engine oil so that it lasts longer. Therefore, our component ‘y’ has to have a higher value so that the engine oil that we use should be able to stick to the walls of the engine and lubricate it well.

Choosing The Best Grade Engine Oil According To Your Needs

Here are a few tips that will help you choose the most suitable bike engine oil for your motorbike

  • You can use an engine oil that has a grade slightly higher than ‘y’ if your vehicle is driven all day long or if you live at a place that has extremely high temperatures on a summer day. This will only enhance the efficiency of your bike engine.
  • We should not use an engine oil that is too thick because that will cause the engine to drag around.
  • You should not use any engine oil that has a rating lower than your recommended ‘y’ component as it will only cause damage to your engine and fail in proper lubrication.
  • The first component ‘x’ matters only if one lives in extremely cold conditions. But if not, then one can go with engine oil that can have variable rating of ‘x’.


Now that you have learnt all about the grades of bike engine oils, it should not be a drudge to choose an engine oil of a perfect grade for your motorbike. We hope this article proved to be informative enough for you and we were successful in delivering a knowledge packed content to your service.

Just remember to aim for an engine oil with a higher ‘y’ rating but not too high. And go for an engine oil that has a lower value of ‘x’ component. If you keep these in mind while making your choice then you shall be good to go.

If you are looking for information on best bike engine oil brands in India then visit the blog sections on our site.

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