Quick Answer

You Asked Can I use 10W oil instead of 5W?

According to API motor oil guide [1], If you are using 10W–30, you can safely switch to 5W–30 (in car engines). 5W–30 is thinner than 10W–30 when cold. (you must follow the manufacturer’s recommendations). However, switching from 5W–30 to economical 10W–30 is not always recommended.

What happens if you put 10W instead of 5W?

The benefit of using a 10W instead of a 5W oil is that the 10W will usually have less viscosity improvers. Oil behaves “thicker” at higher temperatures when it is improved by viscosity improvers, but lubrication is not provided.

Is 5W or 10W better for summer?

Answer: There is absolutely no need to switch to 10W-30 motor oil in the summer if 5W-30 is an acceptable grade for your engine. While some car manufacturers still advocate the use of 10W-30 (or even 10W-40) as an appropriate engine oil option for summer use, it is completely unnecessary.

Can I replace 5W-30 with 10w30?

The answer is yes. You can use 10w30 instead of 5w30 oil since both meet the SAE standard for viscosity at operating temperature. Generally, the viscosity difference between the two is neglectable.

Is 10W30 good for winter?

10W30 vs 10W40 Oil FAQs

10W-30 motor oil is recommended for ambient temperatures not exceeding -30°C/-22°F in the winter or 35°C/95°F in the summer. This is a great motor oil to use if you live in Canada or cooler U.S. states. Colder regions would require 5W-20, while hotter regions may call for 10W-40.

Which oil is heavier 5W or 10W?

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.

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 5W30 or 10W30 better for summer?

Generally, you’ll get the best protection in the summer when you use a thicker grade of oil, such as a 10W30 instead of a 5W30.

Is 10W 30 thicker than 5W 30?

Suitable Vehicle Types. 5W-30 multi grade oil is ideal for private vehicles and light-duty petrol and diesel engines. It also provides a better cold temperature start than 10W-30 oil. On the other hand, the slightly thicker oil,10W-30, provides better lubrication for commercial vehicles and heavy-load engine cars.

Is 5W or 10W better for winter?

The lower the W number, the better the oil will perform in colder temperatures. Typically, a 5W oil is recommended for winter use, but synthetic oils can be formulated to flow even more easily when cold.

What oil is better for hot weather?

Generally, you’ll get the best protection in the summer when you use a thicker grade of oil, such as a 10W30 instead of a 5W30. Summer heat and the effects of thinning the oil out of engines make them require thicker oils.

Can I use 10w30 instead of 5W-30 in winter?

Although both 5w30 and 10w30 are multi-grade, the latter thins enough when living in an area with extremely low temperatures. This makes it perform much better during the winter season than 10w30. 10w30, on the other hand, will flow effectively in hot summers or higher temperatures.

Does 10W30 hurt 5w20 engine?

Notwithstanding the recommendations of the car manufacturer, mixing 10w30 and 5w20 will not cause any sort of harm to the engine. However, a few drivers claim that it is safer to combine two multi-grade or straight weight oils, rather than mixing multi-grade with straight weight oils.

Is 10W30 better for high mileage?

10W-30 motor oil makes for a decent high-mileage oil. It gives a better fuel economy while reducing the oil consumption for older engines. Older engines with more than 75,000 miles on them require a thicker oil that will properly lubricate their critical engine parts and prevent oil leaks, sludge, and deposits.

Will thinner oils damage your engine?

Just like using an oil with too high a viscosity may lead to problems in Brad’s engine, using a thinner oil can have the same result. Oil that’s too thin can fail to develop a consistent lubricating film, inviting metal-to-metal contact that causes wear. Extreme stress and heat add to the challenge.

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.

Is 10W30 good for hot weather?

2. High Operating Temperature Or Warm Weather. 10W30 oil and 10W40 perform the same at cold temperature startups. However, 10W-40 engine oil is more viscous in hotter climates and has a better temperature spectrum.

What happens if you put 10w40 instead of 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.

Can I mix 10W30 and 5W-30?

Adding 10W30 to your current mix is safe, and will not cause your engine to run any worse. But keep in mind that 10W30 has more density than 5W30. These two motor oils are very similar in viscosity
hence, they might mix perfectly in your engine. Therefore, you can mix 5W30 with 10W30 with no ill effects whatsoever.

Can I put 10w40 in 5W-30?

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.

Is 0W oil better than 5W?

The first number of a multi-grade oil designates the ability for the oil to be pumped and flow at colder temperatures
the “W” stands for winter. Thus, a 0W oil will be able to flow faster and get to critical engine components better than a 5W or a 10W oil
especially in extreme cold conditions and at engine start-up.

How often should I really change my oil?

On average, vehicles are estimated to need an oil change every 3,000 miles or every six months. This can vary based on your driving habits, your driving frequency, the age of your vehicle, and the quality of the oil you use. If you drive a newer vehicle, you might be able to safely wait a little longer between changes.

Is it OK to put synthetic oil in an old car?

It protects better, performs better, and lasts longer, and it’s no longer made with a chemical compound that could hurt older vehicles. Modern synthetic oil is safe to use in all types of vehicles, ranging from new purchases to classics to aging not-so-classics.

What oil is recommended for high mileage vehicles?

High mileage oil is designed for vehicles with more than 75,000 miles. Such oil features additives that help protect seals. This leads to less leakage and oil burn-off, which can be common in older cars. If your vehicle is high-mileage and high performance, it’s suggested that you go with this type of synthetic oil.

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.

What’s the difference between 5w 30 and 10W 30 oil?

The main difference between 5w30 and 10w30 is that 5w30 is less viscous and more efficient than 10w30 because the fuel is thinner and can reach the difficult part of the engine. 5w30 is a viscosity engine oil that is used for engine lubrication.