Does it matter if I use 10w40 instead of 5W-30?


  1. Does it matter if I use 10w40 instead of 5W-30?
  2. Can I mix 10W-40 with 5W-30?
  3. When should I use 10w40 oil?
  4. Will 10W40 hurt a 5w40 engine?
  5. Is it bad to put 10W40 in a 10w30?
  6. Does 10W40 hurt 10W30 engine?
  7. Is 10W40 good for high mileage?
  8. What is the temperature range for 10W40 motor oil?
  9. What is 10W40 oil used for?
  10. Is 10W40 thicker than 5W-30?
  11. What is 10W-40 oil used for?
  12. What is the meaning of 10W40 in engine oil?
  13. What happens if I put 10W40 instead of 10W30?
  14. What oil is better for hot weather?
  15. Should I use 10W30 or 10W40?
  16. Is 10W-40 oil good?
  17. What grade of engine oil should I use?
  18. Which oil is best for car engine?
  19. What is the temperature range for 10w40 motor oil?
  20. Is 5w 40 oil good for hot weather?

Does it matter if I use 10w40 instead of 5W-30?

One must use the oil specified by the manufacturer. 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 mix 10W-40 with 5W-30?

No, especially if it’s a different manufacturer. The additives could react with each other. At least you should use the same brand, but 10w40 is a bad oil, and if the engine requires 5w30, the 10w40 is too thick. It’s also not good, because that oil has about a third of it as oil thickeners.

When should I use 10w40 oil?

While both are low-temperature grade oils, 10W40 is thicker at high temperature, therefore, better to use in warm weather.

Will 10W40 hurt a 5w40 engine?

No, you can use 5w-40 anywhere a 10w-40 is recommended. At operating temperatures, both oils are 40wt and are equivalent. What matters most is the operating temp viscosity (the 2nd number). The first number (with a “w”) only applies to colder oil viscosity.

Is it bad to put 10W40 in a 10w30?

If you were to put 10W40 in an engine designed for 10W30, the “thicker” oil would lead to friction in the engine and an increased load on the oil pump. The car would have to do more work to get the oil around the engine block.

Does 10W40 hurt 10W30 engine?

If you were to put 10W40 in an engine designed for 10W30, the “thicker” oil would lead to friction in the engine and an increased load on the oil pump. The car would have to do more work to get the oil around the engine block.

Is 10W40 good for high mileage?

Mobil 1 High Mileage 10W-40 motor oil is recommended by ExxonMobil for use in high mileage vehicles (even those that have used lower quality conventional oils†), including: Cars.

What is the temperature range for 10W40 motor oil?

Here’s the recommended ambient temperature range for each oil grade, in general: SAE 10W-30 motor oil: -25°C (-13°F) to 30°C (86°F) SAE 10W-40 motor oil: -25°C (-13°F) to 40°C (104°F)

What is 10W40 oil used for?

The 10W-40 engine oil has a thicker viscosity than, say, 10W-30 oil when the car engine is hot. This helps it lubricate older moving parts in high mileage engines while being less likely to leak.

Is 10W40 thicker than 5W-30?

A 10w-40 motor oil is a thicker oil at startup than a 5w-30 motor oil. Therefore, 10w-40 oil clings to the engine’s moving parts more than the lower viscosity 5w-30 oil.

What is 10W-40 oil used for?

The 10W-40 engine oil has a thicker viscosity than, say, 10W-30 oil when the car engine is hot. This helps it lubricate older moving parts in high mileage engines while being less likely to leak.

What is the meaning of 10W40 in engine oil?

10W-40 10W-40 is the engine oil which offers a 10 weight performance in the cold starting temperature. On the other hand, it provides a 40 weight performance at the normal operating temperature of the engine.

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

10W40 oil has a higher viscosity, retaining more thickness than 10W30 as the temperature rises. In that case, 10W-40 motor oil would technically provide better protection against engine wear contact in higher temperatures.

What oil is better for hot weather?

6 Top Best Motor Oils For Hot Climate Like Florida And ComparisonIMAGEPRODUCTEDITOR’S RATINGCastrol 06246 Edge Full Synthetic Motor Oil9.1BEST BUDGETValvoline High Mileage Oil With MaxLife Technology8.8Mobil 1 120762 Synthetic Motor Oil8.6Castrol 03094 GTX 10W-40 Conventional Motor Oil8.2

Should I use 10W30 or 10W40?

10W40 oil has a higher viscosity, retaining more thickness than 10W30 as the temperature rises. In that case, 10W-40 motor oil would technically provide better protection against engine wear contact in higher temperatures.

Is 10W-40 oil good?

10W-40 motor oil’s greater tolerance for hotter temperatures means that it’s better at resisting thermal breakdown and reducing deposit formation. So, if you drive in a warm climate — especially more than 32°C (90°F) — or have an engine that runs hotter than others, 10W-40 oil viscosity is a good option.

What grade of engine oil should I use?

A lower number is better before the W for cold-weather performance, so a 5W oil is typically what’s recommended for winter use. However, synthetic oils can be formulated to flow even more easily when cold, so they are able to pass tests that meet the 0W rating.

Which oil is best for car engine?

If you are owning a petrol-powered car, Indianauto suggest the list of best engine oils for petrol cars in India.Castrol. Product: 3383754 MAGNATEC Stop-Start 5W-30 Petrol Engine Oil. Mobil 1. Product: 0W-40 Fully Synthetic Oil. Shell. Product: Helix Ultra 550041109 5W-40 API SN Fully Synthetic Car Engine Oil. Motul.May 26, 2020

What is the temperature range for 10w40 motor oil?

Here’s the recommended ambient temperature range for each oil grade, in general: SAE 10W-30 motor oil: -25°C (-13°F) to 30°C (86°F) SAE 10W-40 motor oil: -25°C (-13°F) to 40°C (104°F)

Is 5w 40 oil good for hot weather?

5w40 is better for starting your engine at low temperatures as it flows more easily at these temperatures. When the engine is running and hot, 5w40 and 10w40 have high viscosities and are equally effective in protecting against engine wear.