5w40 Vs 15w40 Engine Oil

One of the most important decisions you’ll make for your car is what engine oil to use. There are many different types available, each with its own benefits and drawbacks. This blog post will discuss the differences between 5w40 and 15w40 engine oils. We will help you decide which one is right for your vehicle!

5w40 Vs 15w40 Table

We will discuss the differences between 5w40 and 15w40 engine oil and help you decide which one is best for your car!

5w40

15w40

SynShield OTR Plus

Delo 400 SDE

Excellent fuel economy

Improved fuel economy gradually

Superior cold weather startability

Formulated with ISOSYN technology

Excellent heat resistance thinning

Long intervals between oil drains

superior soot busting, deposit-dispersing capability

Has outstanding performance with ultra-low sulfur diesel

Suitable for use API CK-4.

Meet the requirements of post-2007 low emission engines

Excellent cold cranking startability and low weather pumpability.

Premium quality, heavy duty motor oil manufactured in the USA

Why Compare?

The main difference between 5w40 and 15w40 oil types is the oil’s viscosity. Viscosity is a measure of how easily a fluid can flow. The lower the number, the thinner the oil and the easier it will flow. The higher the number, the thicker the oil and the harder it will be to move.

Thinner oils like 5w40 are ideal for engines that start up in cold weather, as they will flow more efficiently and reduce the chances of engine seizure. Thicker oils like 15w40 are better for engines that run hot, as they will help to protect the engine from damage. Both engine oils have pros and cons, but which is best for your car? Here are a few factors to consider:

Climate

The climate you live in will play a role in deciding which engine oil is right for your car. If you live in colder weather, you should use a thinner oil like the Mobil 0W-40 or Castrol Edge 0W-40. These oils will flow more efficiently when the engine is cold and help prevent engine seizure.

If you live in a hot climate, you should use a thicker oil like the Pennzoil Platinum 15W-40 or Castrol GTX 15W-50. These oils will help to protect your engine from damage when it runs hot.

Engine Type

The type of engine in your car will also affect which oil is best for you. If you have a petrol engine, you should use a thinner oil like the Mobil 0W-40 or Castrol Edge 0W-40. These oils are designed to work well with high-performance engines.

If you have a diesel engine, you should use a thicker oil like the Pennzoil Platinum 15W-40 or Castrol GTX 15W-50. These oils protect your engine from the high temperatures produced by diesel engines.

Driving Habits

Your driving habits will also play a role in deciding which oil is best for your car. If you do a lot of stop-and-go driving, you should use a thinner oil like the Mobil 0W-40 or Castrol Edge 0W-40.

If you do a lot of highway driving, you should use a thicker oil like the Pennzoil Platinum 15W-40 or Castrol GTX 15W-50. These oils are designed to protect your engine from the high temperatures produced when engines run at high speeds.

Detergents

Detergents are incorporated in various oils to cleanse those that may contain particular commodities throughout their consumption. It acts as a purification agent for engine oil and aids in filtering undesirable particles.

The 5w40 engine oil has no detergents because of its natural existence. The 15w40 engine oil, for its part, has detergents in its condition. Because engine oil is mineral oil, such particles are expected to be present. Hence, they must be purified before ultimate use. The detergents can be found in 15w40 motor oil.

Viscosity

These engine oils have different viscosity that determines their reactions to various weather conditions. Viscosity is the flowability of the oils or simply how fast or slow one fluid can flow.

The viscosity levels of the 5w40 engine oil are specified to be maintained at a maximum of 5 degrees. It must circulate within these low temperatures to work correctly. This situation indicates that the oil flows well in low temperatures, which correspond to the winter season.

On the other hand, the 15w40 engine oil specifies a minimum temperature of 15 degrees at which the oil can circulate into the engine. It flows at low and high temperatures, making it a multi-grade oil for automobile engines.

Conclusion

The main factors you should consider are the climate, engine type, and driving habits when choosing between the two oils. If you live in cold weather or have a petrol engine, you should use the Mobil 0W-40 or Castrol Edge 0W-40. If you live in a hot climate or have a diesel engine, you should use the Pennzoil Platinum 15W-40 or Castrol GTX 15W-50. I hope this article helps you choose the right engine oil for your car. Thanks for reading!

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