There’s not much difference between 10W-30 and 10W-40 motor oil. What sets them apart has more to do with temperature fluctuations and engine load. For moderate weather, either engine oil grades should work fine. Your choices will become more critical when you start getting into high-heat situations.
What happens if I use 10W-40 instead of 10W-30?
Between a 10W-30 and 10W-40, 10W30 motor oil would run smoother in colder climates while a 10W40 would be more effective in preventing engine wear and tear in warmer temperatures.
Can you use 10W40 instead of 10W30 oil?
The short answer is yes. Because both oils are formulated to give the same performance, it will be safe for you to use either oil. Some differences between the two oils include viscosity and base 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.
Is there a big difference between 10W30 and 10W40?
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.
Q: 10W-40 OIL IN 10W-30 ENGINE? SPROCKET UPDATE, TYRE WARRANTY, ROYAL ENFIELD SERVICE, CARB CLEANER
What oil can I use instead of 10W30?
Performance. Both 5w30 and 10w30 engine oils have a similar SAE rating, meaning that they will perform the same at high or operating temperatures. The digit 30 indicates the viscosity of the oils when in high temperatures. 10w30, however, will thicken more when in a cold climate.
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. Trucks.
Which oil is heavier 10W30 or 10W40?
The quick answer is 10W40 is a thicker engine oil than 10W30 at higher temperatures. Both have almost the same characteristics, and the only difference is the oil viscosity.
Is 10W40 fully synthetic?
Semi-synthetic oils such as 10W40 have long been the standard. Their base is refined crude oil, which is then blended with additives.
Is Thicker oil better for older engines?
A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well.
What happens if you use 10w40 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.
When should I use 10w40 oil?
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.
What is 10W-40 used for?
Higher viscosity oil such as a 10W-40 can be useful for older engines burning or leaking oil. We offer Mobil™ 10W-40 high viscosity motor oils for use in vehicles with more than 75,000 miles, and a synthetic blend oil when cost is a consideration.
Is 10w40 engine oil?
10W-40 is the viscosity, or weight, of the motor oil as defined by the Society of Automotive Engineers (SAE for short). A 10W-40 oil has a viscosity grade of 10W at a low temperature and 40 at a higher temperature. What does this mean, exactly? Motor oil thickens when it’s cold and becomes thinner when heated up.
How long does 10w40 oil last?
Unopened Motor Oil
This will give you about 2-5 years before unused oil becomes unfit for consumption. Unless you need to use the oil, do not open the oil bottle at all. Keep in mind, though, fresh oil will degrade over time and lose its oil additives properties, impacting the oil life.
Will heavier oil hurt my engine?
It’s best to use the oil viscosity recommended in the owner’s manual, but using a slightly thinner or thicker oil (lighter or heavier viscosity) generally poses no long-term harm.
What happens if you put the wrong oil in your car?
You might notice a few oil spot in your garage or under your car because using the wrong oil can lead to leaks, or you might become aware of a burning smell while driving. If the oil isn’t working as it should engine parts might not be lubricated well enough and cause friction, which can burn the oil.
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.
Is 10W-40 oil OK for petrol engine?
It’s guaranteed to be safe to use in both petrol and diesel engines which require 10W-40 fuel, and quality is assured thanks to our superior testing and development process. 10W-40 oil is commonly used in diesel engines, as well for motorcycles and older cars that have a history of oil leaks.
Is 10w 40 better than 5w 30?
The 5w30 oil will flow better at low temperatures than the 10w40 oil. This means that the 5w30 oil will protect the engine better at low temperatures, usually when the engine is just starting or during weather conditions such as winter.
What oil should I use for high mileage?
Some mechanics recommend switching to a thicker (higher viscosity) oil — such as 10W-30 full synthetic oil instead of 5W-20 full synthetic — or using oil additives to stop leaks.
What kind of oil is best for high mileage engines?
10 Top-Rated Oils and Additives for High-Mileage Vehicles
- Valvoline High Mileage with MaxLife Technology Synthetic Blend Motor Oil. …
- Pennzoil High Mileage Motor Oil. …
- Slick 50 Recharged High Mileage Treatment. …
- Gumout Fuel System Cleaner. …
- Royal Purple High Mileage Synthetic. …
- Techron Fuel Cleaner. …
- Mobil Super High Mileage Oil.
Which oil is best for old engines?
When you’re choosing the best oil for older cars or high mileage engines, there are several criteria you can look at.
- Pennzoil High Mileage Conventional Motor Oil. …
- Castrol GTX Part-Synthetic High Mileage. …
- Valvoline MaxLife High Mileage Synthetic Blend. …
- Mobil1 High Mileage Engine Oil. …
- Amsoil Premium Protection Motor Oil.
Is thicker engine oil better?
Within reason, thicker oil maintains a better lubricant film between moving parts. Some have even used thicker oil in a leaky engine to prevent oil from seeping out. But really, thicker oil is not good for your engine.
Is it OK to use full synthetic oil in older cars?
It protects better, performs better, and lasts longer, and it’s no longer made with a chemical compound that could hurt older vehicles.