Will Thicker Oil Damage My Engine?

Higher parts temperatures, more wear. Too thick or too thin oils can both be bad for engines, but damage is neither immediate nor catastrophic; it just reduces overall engine life. … Always use the oil recommended by the engine manufacturer.

Is it OK to mix 5w30 and 5w40?

You can use 1 litre of 5W30 mixed with 5W40 and it will not cause any sort of ill effects to the engine. … In the long run, though, stick to using one type of oil to get the best performance out of your engine.

Does 10w40 hurt 5w30 engine?

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 5w30 thicker than 5w40?

In fact, the only major difference between ​5w30 and 5w40 is the viscosity in warmer temperatures. ​This makes the 5w30 better suited for colder temperatures and the 5w40 better suited for warmer ones.

Should I use thicker oil in an older engine?

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.

Is 5w30 good for summer?

5w30 is a great multigrade oil for use in low starting temperatures as well as high summer temperatures. It is also more fuel efficient since it creates less drag on the bearings and moving engine parts. 10w30 is thicker and may provide better sealing capability for older engines.

Which oil is best for petrol cars?

Most of the car manufactures recommend the use of 5W30 or 10W30 mineral oil in petrol engines. But now a days everyone wants to use the best possible Engine Oil in their car. So here comes Synthetic Engine Oil in picture.

Can you put 10w40 in a 5w40 engine?

10w40 is a slightly thicker (viscosity) oil than 5w40, a lower viscosity oil protects better from cold, it’s also recommended for new engines with very tight tolerances, but pour it into an older engine and the piston rings will struggle to keep it out of the combustion chamber and you’ll burn oil.

What is the best oil for your car?

Answer. Synthetic oils typically provide better protection than conventional oils, but switching back and forth between full synthetic and conventional oil will not damage the engine.

Which engine oil is thicker?

Once the engine is running, the oil heats up. The second number in the viscosity rating—the “40” in 10W-40, for example—tells you that the oil will stay thicker at high temperatures than one with a lower second number—the “30” in 10W-30, for example.

Is 5w30 oil thicker than 10w40?

5w30 is less viscous while 10w40 is more viscous. The 5w30 has a viscosity of 30 at high temperature while a 10w40 has a 40 viscosity at high temperatures. … When at high temperatures, the 5w30 oil becomes thinner than the 10w40 oil since 30 is lower as compared to 40.

Is 10w40 good for summer?

Using 10w40 oil in the summer will help the oil stick to internal components in high temperatures, avoiding the wear and tear from metal-to-metal contact between moving parts. As previously mentioned, the only difference between 10w30 and 10w40 oil is their thickness at engine operating (hot) temperatures.

Can you use synthetic oil in older cars?

Synthetic oil technology has improved over the years, and most cars on the road today should be able to use either synthetic or regular oil, so long as the proper weight is used. In fact, some new cars require synthetic oil. … The seals in those engines may not be able to handle the additives in synthetic oil.

What is 20w50 oil?

The numbers 20W50 refer to the viscosity of the motor oil, set by the Society of American Engineers. This refers to its fluidity or thickness. The “20W” indicates how quickly the engine will start when cold or in cold weather. The “50” refers to the thickness of the oil when the motor has been running for a while.

Can 10w40 be used instead of 5w30?

5W30 means that the oil has a thinner consistency in cold weather and will protect your engine at lower temperatures, at less thickness than 10W30. 10W30 means the oil will be a little thicker at the same lower temperatures, and will then protect the engine the same as 5W30 at higher (operating warm) temperatures.

Can you mix semi synthetic oil with fully synthetic oil?

As a general rule of thumb, we don’t recommend mixing different oils. … However nothing detrimental will occur if you mix synthetic oil with either semi-synthetic or mineral oil. If this was your only option, mixing oils would be better than running out of oil and potentially causing damage to your engine.

What is 10w 40 for?

In a 10W-40 for example the 10W bit (W = winter) simply means that the oil must have a certain maximum viscosity or flow at low temperature. The lower the “W” number the better the oil’s cold temperature performance. The 40 in a 10W-40 simply means that the oil must fall within certain viscosity limits at 100°C.

What does 10w40 mean?

In a 10w-40 for example the 10w bit (W = winter, not weight or watt or anything else for that matter) simply means that the oil must have a certain maximum viscosity/flow at low temperature. The lower the “W” number the better the oil’s cold temperature/cold start performance.

Is 0w 30 thicker than 5w30?

Both will be -ABOUT- the same viscosity when at operating temperatures, but as the temperature of the oil drops, the 5W-30 will generally thicken more than the 0W-30 will. The difference generally gets more dramatic as temperatures fall toward freezing and below.

What do numbers on engine oil mean?

The letter “W” itself stands for Winter. As you may know, viscosity means the thickness of a fluid. In the case of motor oil, it is the thickness of the oil under certain temperature conditions. The number to the left of the W refers to the oil viscosity when the temperatures are low.

What’s the difference between 10w40 and 15w40?

The difference is when the engine first starts, the oil is much thicker than when it is fully hot. … ( the whole 10w-40’oil draining away faster’ thing is nonsense because once hot, a 10w-40 and a 15w-40 are exactly the same viscosity and will drain at exactly the same very fast rate until the engine has cooled.

What oil is thicker than 10w40?

Focusing more on the second part of the rating – the ’30’ versus ’40’ – we know that the engine oil with a 10W40 rating will be able to retain its ‘thickness’ or viscosity a lot longer than the engine oil with a rating of 10W30. In very simple words, the 10W40 oil is thicker than the 10W30 oil.

Can I use 0w 30 instead of 5w30?

A 0W-30 low viscosity oil can be used where a 5W-30 or 10W-30 is recommended. Switching to a Mobil™ 0W-30 motor oil can help improve fuel economy because of the lower friction properties offered by this full synthetic formulation. … General Motors recommends dexos1 certified motor oils for all 2011 or newer vehicles.

Can I use 10w oil instead of 5w?

Using 10w-30 instead of 5w-30 engine oil. … According to the owner’s manual, car manufacturer recommends 0w-20 or 5W-30 engine oil. But the previous owner has used 10w-30 oil. The average temperature of the area I live in is 27°C. Temperature ranges from 25 to 32°C (77 to 90°F).

What happens if you put 10w40 instead of 10w30?

The only difference between 10w30 and 10w40 oil is their thickness at engine operating (hot) temperatures. … In the past, it was common practice to switch to a higher viscosity oil as an engine got older, for example, using a 20w50 oil in place of the 10w40 recommended by the manufacturer.

Is sae30 the same as 5w30?

So the first number such as 5 in 5w-30 means… see more. SAE30 weight oil is rated only at the full operating temp of the engine. … However it is important to note that the 30 is the same across all three oils, meaning that they will all be the same viscosity once the engine is at full operating temperature.

What’s thicker than 5w30?

A more viscous oil, such as 10w30, will seal better than low viscosity oil, such as the 5w30. A thicker motor oil also offers better lubrication of key engine parts. However, thicker oils also put more drag on these engine parts, thus slowing down the engine performance.

What oil does Kia recommend?

The 2020 Kia Soul requires an oil viscosity grade of SAE 5W-30. This is a pretty common oil recommendation because it works well for all seasons (including cold temperatures during the winter) and delivers excellent performance and efficiency.

What happens if I put 5w40 instead of 5w30?

If you are racking your brain to choose between 5w30 and 5w40, we recommend you go with 5w30. However, if it is too expensive or not available for use, you can always go with the 5w40, which is just as good and will not cause any damage to the engine parts.

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

What would happen if I use 5w30 oil instead of 5w40 in my car engine? So long as the oil pump can produce enough pressure to get the oil flowing into all the important areas properly, there should be no problem. If the oil pressure light does not go on at idle you are likely not causing any damage.

What does 5w 40 mean in oil?

Answered Mar 19, 2017. In a 5w-40 for example the 5w bit (W = winter, not weight or watt or anything else for that matter) simply means that the oil must have a certain maximum viscosity/flow at low temperature. The lower the “W” number the better the oil’s cold temperature/cold start performance.