Your question: What is the meaning of engine oil grade?

Oil grades relate to an oil product’s performance at operating temperature (about 212 degrees Fahrenheit in your engine). You might be familiar with terms such as “30-weight” or “10W-30” oil. Those numbers refer to the grade. The higher the number, the thicker the oil. The lower the number, the thinner.

What engine oil grade means?

The engine oil grade is in the form of an alpha-numeric code. … Tells us how the oil will flow in cold conditions. The smaller the number, the better will be the flow. For instance, a 5W-30 oil will have a better cold flow than 10W-30 engine oil.

Which engine oil grade is best?

It’s best to follow the recommended oil grade, as an engine oil with ’40’ grade is thicker. That said, it can survive better in higher temperatures. ACEA Rating – The ACEA Rating of engine oil is its lubricant ratings. Some examples of ACEA Rating include A5/B5, A3/B4, etc.

What are the different grades of engine oil?

MOTOR OIL VISCOSITY GRADES

  • 0W-20.
  • 0W-40.
  • 5W-30.
  • 5W-40.
  • 10W-40.
  • 15W-40.
  • 20W-50.

What does 5w30 and 10w30 mean?

Both 5w30 and 10w30 engine oils have a similar SAE rating, meaning that they will perform the same at high or operating temperatures. The digits 30 indicate the viscosity of the oils when in high temperatures. 10w30, however, will thicken more when in a cold climate. 5w30 is much suitable during the cold season.

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How do you read oil grades?

In a 5W-30 for example, the number before the W describes the viscosity of the oil at low temperatures. The lower the number, the thinner the oil and the better the oil’s cold temperature/ cold start performance. The number after the W describes how thick the oil is at the engine’s normal operating temperature.

What 10W40 means?

What Does 10W40 Mean? 10W-40 is the viscosity, or weight, of the motor oil as defined by the Society of Automotive Engineers (SAE for short). A 10W-40 oil has a viscosity grade of 10W at a low temperature and 40 at a higher temperature. … Motor oil thickens when it’s cold and becomes thinner when heated up.

What does 10W30 mean?

That’s why you see two numbers on most oils. For Example: 10W30. This means the viscosity is at 10W when the engine is cold and 30 when the engine is hot. Low viscosities are good for cold temperatures (hence the “W” association) because the oil is thinner. Thinner motor oil flows more easily and moves quickly.

What happens if I put 10W40 instead of 5W30?

If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters. Similarly the oil viscosity will be higher and oil thicker than specified during summers.

Can I use 10W-40 instead of 10W30?

Similarly, SAE 10W-40 motor oil performs well in cold weather conditions. It has the same low-temperature limits as the 10W-30 but is better in higher temperatures. … Either 10W30 or 10W40 for summer use is fine; however, 10W-40 motor oil will better protect your engine.

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Is 10W30 good for summer?

As a general rule, you’ll get the best protection in the summer when you use a slightly thicker grade of oil, such as a 10W30 instead of a 5W30. Engines need a thicker oil in the summer months because of the summer heat and its effects on thinning the oil out.