Quick Answer

Question What is the difference between 5w30 and 10w-40?

The main difference between 5w30 and 10w40 is that the viscose of 5w30 is five at low temperatures, whereas the viscose of 10w40 is ten at low temperatures. 5w30, as well as 10w40, are both suitable depending on the layout of your engine and the heat in your area.

What happens if I use 5w30 instead of 10w40?

Can You Mix Car Oil 5w30 And 10w40? The oil that performs better in the cold than 10w40 is 5w30, but less good cold than 10w40, and that has a viscosity that is higher than 5w30 but lower than 10w40. The engine will not be improved by mixing different oils.

Why is it recommended to use 5w 30 oil during winter and not 10w-40?

The oil’s cold weather rating is 5W30, which stands for winter and winter weather. Oil that has a lower W number will perform better in colder temperatures. Synthetic oils can flow even more easily when cold, which is why 5W oils are typically recommended for winter use.

Can I use 10W-40 instead of 10w30?

The 10w30 and 10w40 oil options are both acceptable for your car, but if you have a high mileage car, you should use the 10w40 oil. Viscous 10w40 is more viscous than viscous 10w30. Older engines are able to handle higher temperatures and wear and tear more efficiently with thicker oil.

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.

What is the difference between 10W-40 and 5w 40 engine oil?

5W40 vs 10W40 – Differences

The main difference between the two oil types is that one is thinner than the other. The 5W40 is thinner than the 10W40 at lower temperatures. But when the temperature is higher, both motor oils similarly perform their intended functions (using the same viscosity).

Is 10W40 good for high mileage?

Is 10w40 Good For High Mileage? The 10w30 and 10w40 oil options are both acceptable for your car, but if you have a high mileage car, you should use the 10w40 oil. Older engines are able to handle higher temperatures and wear and tear more efficiently with thicker oil.

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.

Can I use 5w40 instead of 10W40?

If you need a 10w-40, you can use 5w-40. Both oils are equivalent at operating temperatures of 40Wt. The second number is the operating temp viscosity (the number that matters most). Colder oil viscosity is only affected by the first number (with a “w”).

Is Thicker oil better for older engines?

Older engines use more oil, but it gives them a better fuel economy. Older engines with more than 75,000 miles on them require a thicker oil that will lubricate their critical engine parts and prevent oil leaks, sludge, and deposits from forming.

Is 5w-30 or 5w40 better for summer?

Is 5w30 Or 5w40 Better For Summer? The 5W30 can be used by a variety of vehicles, in different temperatures, and in different climates. However, it is best suited for colder temperatures when used in a vehicle. The higher mileage engine sand used in 5w40 is often better at withstanding warmer temperatures than 4w40.

Is 10W40 oil thicker than 10W30?

The viscosity of hot oil is measured using different test parameters than when the oil is cold, so the numbers after the “W” don’t relate to the numbers in front of the “W”. The difference between 10W-30 and a 10W-40 is the high temperature viscosity. Obviously, a 10W-40 is thicker than a 10W-30 at high temperature.

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.

When should I use 5W-40?

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

Is 10W-40 OK for my car?

Your vehicle does not use 5W-30 oil. The recommended oil viscosity for your vehicle, according to Kia documentation, is 10W-40. If you drive the vehicle in exceptionally cold weather, well below 32 degrees, you can use 5W-30 oil but even 10W-40 is still perfectly OK to use if outdoor temperatures are below freezing.

What is 10W-40 oil used for?

This oil weight is commonly used in diesel engines or in a smaller motorcycle engine too. The 10W-40 oil viscosity also often serves as an alternative for older engines with burning or oil leaking issues. Why is that? The 10W-40 engine oil has a thicker viscosity than, say, 10W-30 oil when the car engine is hot.

Is 10W40 good for summer?

They are both available in pure conventional form or as high-quality synthetic grades. Either 10W30 or 10W40 for summer use is fine
however, 10W-40 motor oil will better protect your engine.

Is 10W40 synthetic?

Semi-synthetic oils such as 10W40 have long been the standard. Their base is refined crude oil, which is then blended with additives. However the market is moving towards synthetic oils.

Is 10w40 better for older cars?

Is 10w40 Better For Older Cars? When you put more pressure on your vehicle’s engine at high temperatures, 10w40 will reduce wear and tear on the engine and make it more durable. 10w40 is also an excellent choice for older vehicles.