The difference between 10W30 and 10W40 is the high temperature viscosity. Obviously a 10W40 is thicker than a high temp 10W30. … Using oil with the right viscosity will make starting easier, reduce friction and slow down wear.
Is it ok to use 10W40 instead of 10W30?
This is why your location is so important when deciding which oil to use. Between a 10W30 and a 10W40, a 10W30 motor oil would work better in colder climates, while a 10W40 would be better at preventing engine wear in warmer temperatures.
What is the most economical 10W30 or 10W40 motor oil?
Technically, a lighter oil offers better fuel economy because its lower viscosity makes it easier to move through the oil system. However, the difference between 10W30 and 10W40 is indistinguishable.
When to use 10W40 oil?
10w40 is best for hot weather or heavy loads. If you expect your vehicle’s operating temperature to be higher than most occasional cars, then using 10w40 is recommended. 10w40’s higher viscosity at high temperatures reduces wear when you put more pressure on your vehicle’s engine.
Should I use thicker oil in an older engine?
On an older, high mileage passenger car it is recommended that as you approach and exceed 100,000 miles you switch to a heavier oil such as 10W30 to properly lubricate and keep the engine.
What happens if you use 10w40 instead of 10w30?
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 put 10W40 in an engine rated for 10W30, the “thicker” oil would cause friction in the engine and increased stress on the oil pump .
Does 10w40 damage the 10w30 engine?
So if you’re changing your oil from 10W30 to 10W40, you need to be aware of the weather around you. Changing from 10W30 to 10W40 will not affect your engine if you choose the right one for the right time of year. It’s absolutely safe, you can go there.
Can I use 10w40 instead of 10w30 on my bike?
10w40 would be thicker than 10w30. Viscosity 40 works well on the bike. It is the most popular than the 30 in terms of availability and practicality. Depending on the formulation, class 40 oil can be used in cars, motorcycles, tractors and trailers.
Is 10w40 good for my car?
The recommended oil viscosity for your vehicle is 10W40 according to Kia literature. If you drive the vehicle in exceptionally cold weather well below 32 degrees, you can use 5W30 oil, but 10W40 is still perfectly usable when the outside temperature is below freezing.
Which oil is better 10W30 or 10W40?
Between a 10W30 and a 10W40, a 10W30 motor oil would work better in colder climates, while a 10W40 would be better at preventing engine wear in warmer temperatures.
Is 10W40 good for high mileage?
If 10w30 and 10w40 are acceptable oil options for your car, it is recommended to use 10w40 for your high mileage car. … Thicker oil helps older engines withstand higher temperatures and manage wear more effectively. Thicker oil reduces wear and extends the life of your engine.
Which engine oil is the most economical?
Fuel economy oils have become popular in recent years, particularly 0w20 and 5w20 oils. Most of these oils offer at least 1-2% more fuel economy than using the next higher viscosity grade.
Can I use 10W30 instead of 10W40?
So if you’re changing your oil from 10W30 to 10W40, you need to be aware of the weather around you. Changing from 10W30 to 10W40 will not affect your engine if you choose the right one for the right time of year. It’s absolutely safe, you can go there.
Is thicker oil better for older engines?
Newer vehicles may use thinner oils to lubricate new engine parts faster. In contrast, older, high-mileage engines benefit from thicker oils to reduce galling and oil loss.
Will thicker oil damage my engine?
Not only that, the engine wastes energy pumping out the thicker engine oil, which reduces fuel consumption. Because thicker oils do not transfer heat as well as thinner oils, operating temperatures also increase, which can lead to accelerated chemical degradation and harmful sludge and deposits.
When should I use thicker engine oil?
For example, if the clearances between engine components have increased and become sloppy, thicker oil can help fill the gap. Within reason, thicker oil maintains a better lubricating film between moving parts. Some have even used thicker oil in a leaking engine to prevent oil from getting in.
Is it better to use thicker oil in a high mileage engine?
High mileage engine oil does no harm and can prevent leaks. … Some mechanics recommend changing to a thicker (higher viscosity) oil – like 10W30 full synthetic oil instead of 5W20 full synthetic oil – or using oil additives to stop leaks.