Quick Answer

You Asked Can you use 10w40 oil instead of 5w30?

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.

Can I use 10W 30 oil instead of 5w30?

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 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.

What is 10w40 oil used for?

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. This higher viscosity oil is designed for hotter temperatures and can handle the added heat stress from the environment.

Can you put 10w40 in a 10w30 engine?

Mixing 10W30 with 10W40

Some say that mixing them is fine as long as you don’t live in freezing weather. Even if you put together synthetic and conventional blends of these motor oils, they show no harm to your vehicle. However, this is true only if you mix in a quart of the other type to your usual engine oil.

Which is thicker 5w30 or 10w40?

The 5w30 oil is much thinner than the 10w40 oil and on the other hand, the 10w40 oil is much thicker than the 5w30 oil. The viscosity of 5w30 at low temperatures is 5 whereas the viscosity of 10w40 at low temperatures is 10.

Can I use 10w40 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.

Which is better 10W-40 or 5w 40?

5W40 vs 10W40 – Differences

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). If your motorcycle requires a 10W40 engine oil, there is no need to go for 5W40 oil.

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.

What does 10W40 oil mean?

The designation “10W-40” indicates a multigrade oil that is toward the low end of the SAE scale in cold weather, but at the upper end in hot conditions. 10W-40 oil is therefore good for a wide range of weather conditions.

Is 10W40 fully synthetic?

The Halfords 10W40 Part Synthetic Oil 3 is formulated to be suitable for most vehicles built after 1990. The Halfords 10W40 oil offers improved engine protection versus a mineral oil, longer service intervals and improved fuel economy and performance.

Is all 10W-40 oil the same?

The SAE grade (in this case 10W-40) only specifies the viscosity of the oil – it doesn’t say anything specifically about the composition of the oil or any additives it may have.

Which oil is better 10W30 or 10W40?

You can see that 10W40 is more viscous than 10W30, at these temperatures. The basic fact that “40” is greater than “30” tells you that. 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.

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.

Can I use a 10W-40?

According to the SAE standards, 10w40 can be used at temperatures not lower than -25 degrees Celsius (-13 degrees Fahrenheit) according to the 10, and the 40 as I said above is the viscosity of the engine at high temperatures (maximum temperature of +40 degrees Celsius, +104 degrees Fahrenheit).

What is the best engine oil grade?

To take care of your engine drive in the warmer months, it is best to choose a motor oil with a high viscosity grade that is not marked ‘W’, meaning SAE 8, 12, 16, 20, 30, 40, 50 or 60 motor oils.

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.

Can you mix 5w30 and 10w40?

Is It Ok To Mix 10w40 With 5w30? The brand should be the same as the product. It is not compatible with the additives to mix brands.