Difference between 5W30 and 10W40

The main difference between 5W30 and 10W40 is viscosity. 5W30 has a viscosity of 5 at low temperature and 30 at high. On the other hand, 10W40 has a viscosity of 10 at low temperature and 40 at high.

5W30 vs 10W40

Motor oil is one of the most essential elements of the vehicle. Motor oil is used to minimize friction between engine parts and other working parts of a vehicle. Chafing of engine parts could cause wear and tear, thereby damaging the engine and eventually making it completely seized. Since friction can be reduced or minimized by lubricating the parts in contact, motor oil is used for this purpose in vehicles. Not only does it improve the efficiency and performance of the vehicle’s engine, it also helps its parts avoid friction. The most widely used motor oils are 5w30 and 10w40.

The first value of the oil indicates its viscosity in low temperature conditions, while the second value indicates the viscosity of the motor oil in a high temperature condition which is generally 100 degrees Celsius. Based on their viscosity under various temperature conditions, these motor oils are considered different depending on their use.

Comparative chart

5w30 is an artificially developed motor oil that has a viscosity of 5 under low temperature conditions and a viscosity value of 30 under high temperature which is universally regarded as 100 degrees Celsius. 5w30 is a less viscous low and high temperature motor oil compared to 10w40.

The ‘w’ in the oil’s name means ‘winter’. As the car cools down on startup, the 5w30 performs at its best by lubricating all the engines and maneuvering around the seals very well. But as the car starts to heat up and the temperature rises, the already thin and less viscous 5w30 tends to run less efficiently. 5w30 is recommended for cars with more hydraulic tappets. 5w30 is more suitable for use in low temperature areas and cold regions.

What is 10W40?

10w40 is an artificially developed motor oil that has a viscosity of 10 under low temperature conditions and a viscosity value of 40 under high temperature which is universally regarded as 100 degrees Celsius. 10w40 is a more viscous low and high temperature motor oil compared to 5w30. The ‘w’ in the oil’s name means ‘winter’.

As the car cools down when starting, the 5w30 performs best by lubricating all the engines and maneuvering around the seals very well, while the 10w40 performs more efficiently when a car is in motion and has a temperature. high. The 5w30 is recommended for cars with more hydraulic tappets, while the 10w40 is suitable for all other motor vehicles. The 10w40 is mainly recommended for use in moderate temperature areas, but it is compatible with all types of heavy motors in any geographical condition.

1. 5w30 is the synthetic artificial motor oil with a viscosity of 5 at low temperature and 30 at high temperature, that is, it is universally considered as 100 degrees.
2. 10w40 is the artificially developed motor oil with a viscosity of 10 at low temperature and 40 at high temperature, that is, it is universally considered as 100 degrees.
3. 5w30 is a less viscous motor oil in both low and high temperatures.
4. 10w40 is a more viscous motor motor oil compared to 5w30 in both low and high temperatures.
5. 5w30 is recommended for vehicles with hydraulic tappets on the engine.
6. 10w40 is good for use with all kinds of vehicle engines other than hydraulic tappets.

Final Thought

5W30 is best for vehicles with hydraulic tappets, while 10W40 is favorable for all vehicle engines except hydraulic motors.