Comparison Between 5W30 and 5W40

best-enigne-oil-brand-in-india 17 Apr 2020

When the time comes to change the engine oil of the car, most car owners will delegate the responsibility to the mechanic, thinking that the mechanic knows all about the car and what is best for it. For other people, the manufacturer’s manual serves as a Bible when it comes to the question of the best engine oil for the car.

In spite of these trends, we believe that changing the engine oil of your car is very much your responsibility. Therefore, you should know what engine oil is best for your car as that will help in ensuring the best performance of your vehicle.

The documentation that comes with the car will state what kind of engine oil will work best, however, there are certain conditions like high mileage engines, price of the vehicle and the climate that will have the final say.

Choosing the right engine oil for your car will guarantee the best possible performance and an engine that runs smoothly without any problems. Here are some basics that will help you with understanding the difference between 5W30 and 5W40 engine oils.

The basics

The numbers mentioned in the description of the oil are not random numbers. They define the grade of the oil. As an example, we are breaking down the 5W30 oil for your understanding.

The 5W in 5W30 refers to the oil that must meet a certain maximum flow at a lower temperature. Lower the W rating, better the performance of the engine oil at a colder temperature.

The 30 rating for the oil refers to the viscosity rating that the oil should reach at 100 degrees Celsius. The lower this rating, the thinner will be the oil at 100 degrees. The oil viscosity is the measure of the resistance of the oil, the thickness indicates the rate at which the oil will flow through the engine.

Low Shear Viscosity

In order to select the best engine oil brand in India, the viscosity of the oil comes into play. If you are seeking a technical approach to selecting the engine oil, the ratings of these two oils are as below;

Operating viscosity of 5W30 is 9.3 to 12.5 mm2/sec at 100g

Operating viscosity of 5W40 is 12.5 to 16.3 mm2/sec at 100g

Factors to consider

Though manufacturers state that a certain oil is best for the car engine, it may not always be the best option. With the aging of the car and the fact that it is driven in different weather conditions, for example, long journeys or on the racing track, you will be better off choosing a different racing engine oil.

As an example, if the vehicle is old or has a high oil consumption, you will be better off in choosing a thicker oil. There are many different types of oil available and you must choose the best engine oil in India for your car after due research. 

SAE 5W30 Highlights

The 5W30 grade engine oil is famed for making your car engine work like a new one. It brings in greater lubrication and also protects your car engine adequately. It is also instrumental in increasing the fuel economy of the car. 5W30 is available from the best engine oil company in India.

Overall performance is improved

Excellent wear protection

Engine is lubricated

Can be used from normal to extreme driving conditions

Can be used in diesel, Gasoline and multi-valve fuel engines

SAE 5W40 Highlights

SW40 happens to be an engine oil that is crudely based and this is best suited for diesel and gasoline engines. This type of motor oil is often used when your car happens to be under warranty.

Can be used for vehicles that use leaded and unleaded gasoline

Has a low volatility

Assists in the reduction of oil utilization

Offers best thinning resistance against heat

Has multiple approvals making it highly recommended


Engine oil is one of the most vital components of your car engine and you can make a huge difference by choosing the right engine oil. The most commonly used engine oil is 5W30, however, if you find that there is oil loss or if you drive a vehicle with high mileage you can switch over to 5W40 without any issues. If you are driving an old vehicle, you will need a thicker oil like 5W40 to reduce the friction between the different components of the engine like the piston rings.

To know more about the right kind of engine oil, visit where you will have expert guidance in choosing the best engine oil for enhanced performance.


Euro Liquids

40 +

Thomas T

Ordered 3 litres of Rowe 75w80 TopGear FE transmission oil. Product was promptly delivered on time. This oil is one of the few oils that mentions the original VW OEM part numbers (G052 527 A2) for 2.0 TDI manual transmission. Shift quality is as good as OEM. Overall Im happy with the product

Shubham Bhatia

Recently got my Swift Vdi serviced from Rowe oil. Really amazed to see the difference in the ride quality and improved average (25km/L). Would definitely use again and recommend everyone who wants best in class average in their cars.

Syed Razvi

My friend suggested me to use this oil, I was a little skeptical about it as I havent heard of it earlier. But then did a little bit of research online and this brand is not a new brand, it's in the international market for many years.

Faizaan Shah

Got it recommended and done by GT TUNERZ so I had to give it a try for sure. It has been the best oil til' now for me. I can feel the abrupt change in my engine power and refinement of the engine. If you love your car and want it to love you back then this engine oil is highly recommended for you.

Jagswroop Singh

Great product, Great service with pre buying assistance. Not a depth review but the vehicle feels smoother and sound better. Keep it Up, Looking forward for regular festive offers to grab good deals.

Satyam Singh

After using Rowe engine oil for the 1st time now engine is smooth, less engine noise, smooth idling. Overall good quality product.

Vaishanv Reddy

Most of these multi-brand workshops use 5w-30 over recommended 0w-20 because it's not available in entire india for diesel car

Finally I'm glad i found ROWE 0w-20 Motorsport oil with volvo certification

Hardik Doshi

The only oil with the grade which comes oem in all volvo and now im all happy n satisfied with this company to be a part of my cars shelf life...i have used it in my volvo and im really very happy with rowe oil.

Babil Salam

Used on 120000kms run C250 Cdi 2010 model Felt super smooth and less engine noise Satisfied and definitely recommended..

GT Tunerz

Fantastic oil, and more importantly, fantastic range, so one can get the correct grade for the application desired engine, gearbox, brske, you name it , they have it!

Ps: Did I say awesome pricing?

Karthik gj

Hi this karthik from infinity customz chennai , I suggested my customer to go with rowe oil after using this oil engine become instantly very refined and best performance output , now im suggesting all my customer to go with rowe products...

Ajay Kishwaha

Top class product and prompt service! Highly recommended

mohammed al attas

The best and unique motor racing oil launched and introduced in india by euroliquids india. Something like this was much needed. Made in Germany.

Kunal Doshi

Finally i found out some trustworthy and efficient oil for my BENZ. This is a brand that strictly follows OEM specifications...

Amit Yadav

Cruze vcdi 2.0 running on ROWE. Engine feels much more smoother and responsive :)


Really good review , the car feels much more smoother and peppier.

Tarun Vallabhaneni

Best Product Ever used,
Engine is more refined,
True German Engineering,
Value for money .

Atishay Jain

Used the Engine Flush and Engine Oil. Significant difference in running of the vehicle. Highly recommended!

Avinash K

The performance is fantastic and would recommend highly to use this. Smooth driving and money’s worth 👍🏻

Telugu Chandu

Very very nice product

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