10w40 vs 10w50 which is better

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10w40 vs 10w50 which is better

Well, you might want to read this article before deciding. There certainly, are some difference between 5w40 and 10w40 oil and after reading this post, you should able to know if can You use 10w40 instead of 5w40 for your vehicle. Last post week we compared 5w20 vs 5w30 in a detailed post showing you which one to use for your vehicle. There are many different oil types available in the market to choose from, but not all of them can be safe to use in your vehicle. This makes it difficult for most car owners to make the right choice from the host of motor oils.

Different motor oils come with different types for specific applications. Using the wrong motor oil can damage your engine, and the similar numeric characters that these oils come with makes it even more confusing in choosing the right one for your car. This is because they take their vehicles to the garage for the oil change and allow their mechanics to choose the one most suitable for their cars.

Some persons may peruse through the internet and go for whichever oil that is recommended by their manufacturer. For you to make the right choice, we need to compare the properties and specifications of engine oils so that you can know the right oil to use in your car. Also, Read 5w30 vs 5w40 Which Oil is the Best Difference between 5w30 and 5w40 and you may also be interested in below list of related articles.

Take, for instance, 5W40 and 10W40, the numbers 5, 10, and 40 represents the viscosity of the oil while the W stands for winter.

Several oil grades were established in order to provide protection for the engine across different temperatures due to the fact that the viscosity of oil changes with the change in temperature.

The number that appears before the W stands for the viscosity of the oil when temperatures are at their lowest. The number that comes after the W designates the thickness of the oil when the engine is functioning at normal temperatures. According to SAE, the x and y, can be represented by viscosity characteristics ranging from 0, 5, 10, 15, 20, 25, 30, 40, 50 and The second number 40determines the thickness of the oil while under the heat of a running engine. Since 5W40 is thicker under heat than an average oil, most mechanics commonly use 5W motor oil to support higher mileage engines.

This oil tends to lubricate moving parts better inside the motor that have been worn down due to age. The 5W40 motor oil is used on high-mileage vehicles in climates that experience winters of 5 degrees Celsius 41 degrees Fahrenheit. This oil is reliable for cold engine start-up but may not be too effective for climates with freezing temperatures.

It is a bit thicker than 5W but is still rather thin and works well to lubricate the moving parts of an engine during start-up. Drivers commonly use 10W40 motor oil in vehicles with higher mileage because the oil is thicker when the engine is hot, thereby helping to lubricate older moving parts.

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The 10W40 motor oil helps to start up vehicles in winter climates that experience temperatures of 10 degrees Celsius.Welcome, Guest. Please login or register. Did you miss your activation email? News: RaptorSource. Home Help Search Login Register. Sorry, you must be logged in to use the shoutbox!

Member Posts: Street Cred: 0. Quote from: Krandall on January 15,PM. Ranger Guest. I use 20w50 but it never gets below freezing here ColoradoR Always the big spoon! Sieze the beer!! Quote from: Ranger on June 03,PM. Member Posts: Street Cred: 6. I ran Klotz racing W full synth in my ever since I put the lockup on it and it never seemed to lack for any HP. I got this from AA1car.

It's just a little overkill IMO. Some European car makes also specify 0W, 0W or 5W for their vehicles. Always refer to the vehicle owners manual for specific oil viscosity recommendations, or markings on the oil filler cap or dipstick.

As a rule, overhead cam OHC engines typically require thinner oils such as 5W or 5W to speed lubrication of the overhead cam s and valve-train when the engine is first started.

Pushrod engines, by comparison, can use either 5W, 10W or 10W As mileage adds up and internal engine wear increases bearing clearances, it may be wise to switch to a slightly higher viscosity rating to prolong engine life, reduce noise and oil consumption.The higher this number is, the better it adheres to and protecting components under extreme pressure and heat.

When choosing an oil, you should always use the rating specified by the engine manufacturer to ensure adequate lubrication of all internal components. Most manufacturers specify a range of viscosities that can be used, letting you choose one that best fits your driving conditions. Using 10w30 oil in cold weather will help reduce excessive oil temperatures and drag as the engine warms up. 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. 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. As oil passages wore down from friction and expand, switching to a thicker oil helped the oil pump push oil through them, ensuring complete lubrication.

However, in modern engines, this is not a good idea. Improvements in machining, oil chemistry and oil filtration means these oil passages remain the same size throughout the life of the engine. Most burning of oil comes not from increased gaps between components, but from aging seals. Using a higher viscosity oil increases strain on the oil pump, and it may even prevent the oil from circulating adequately through the entire engine.

Oil manufacturers have developed high mileage oils to help deal with seal problems in modern engines while still providing the same lubrication performance the motor was designed for.

Most motor oil produced today is multigrade oil. Normally, oil will thin out as temperature increases, but multigrade formulations have additives that cause it to thicken as it heats up to better fit the range of operating conditions seen in car engines.

The flow rate of multigrade oils is first tested at 0 degrees Fahrenheit. The oil is tested again after it has been heated to degrees Fahrenheit.

In the past, oil manufacturers could only produce oils that would flow at a single rate, requiring oil changes to match the oil viscosity to the current weather conditions. Let other readers know by leaving a comment below! I really appreciated your super easy to understand indepth explanation of the difference between 10w30 and 10w40 engine oil.

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No one around me including my dad, uncles, friends and 3 young adult children could give me the straight forward lowdown the way you have. Let us know your thoughts Cancel reply Name Email.Which engine oil viscosity is better? When it comes to picking the right engine oil for your car engine, there are many choices to pick from.

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Due to the variety, choosing the one that is right for your car might be a daunting task. While there is a lot of information about the various choices of oils, the first step that you need to consider is by looking in the manual.

In your car owner manual, there is a list of recommended oil weight, whether it is a standard 5w30 vs 10w30, 10w40, 0w30 engine oil viscosity or any other. You will have to choose an oil with recommended weight from a brand which displays a symbol of starburst that confirms it has been tested by API.

Should You Switch to Thicker Oil for Summer? - Gearhead Diva

The numbers represent the viscosity of the oil. When you are out choosing which oil to use on your car, use what the manufacturer recommends for your specific type of car. There is a reason as to why the manufacturer has recommended that viscosity with the main reason being that, there is a way the engine of your car is built and it requires that specific viscosity. In case you decide to place a heavier oil in the engine than what is required, the engine will not get the oil quantity it requires nor in the particular places where it is needed.

The engine is also dragged down and thus end up causing additional stress and wear on the internal engine parts which are running the oil pump. If the relief pump gets a lot of pressure, some of the oils will be bypassed and it will not be used for engine lubrication. None of the above is good for the engine. And in case you place a lower viscosity oil in your car engine, it will cause the engine to lack the needed pressure to allow the oil to all the places it needs to be.

In both scenarios, there is an increase in the wear and tear of the parts.

10w40 vs 5w40 which one is better for your Car? ( 10w 40 vs 5w 40)

At first, you might not be able to see it, but it affects the longevity of the engine. Always use the oils specified by the car manufacturer manual based on temperature. Viscosity refers to the resistance to flow of a liquid. When it comes to motor oil, it is rated at zero degrees Fahrenheit which are represented by the digit which precedes W, that stands for winter at degrees which is well represented by the second number in the designation of viscosity.

When it heats, motor oil thins and when it cools, it thickens. So when you have the correct additives, it will help in ensuring that the thinning is eliminated, oil is able to be rated for one viscosity when hot, another when cold. The more it resists in thinning, the higher the second number will be, for example, 5w 30 vs 10w Within reason, oils which are thicker tend to seal much better and always maintain a lubrication film that is better between the parts which are moving.

When the temperature is low, oil needs to be resistant when it comes to thickening to enable it to flow more easily on the various moving parts of your engine.

When the oil is too thick, there will be a lot of energy required by your engine in order to turn the crankshaft which is normally partly submerged in an oil bath.

When the thickness is excess, it makes it harder for the engine to start, thereby reducing the fuel economy. In winter a 5W oil is the best to use. However, when using synthetic oils, they are formulated in such a way that they are able to flow more easily when it is cold, and thus, pass the tests which meet the 0W rating.

High mileage oil is formulated for high mileage vehicles, vehicles which last longer. When you see that, there will be a need to add quart more often than when the car was still new.

There is a possibility that the crankshaft seals have become harder and thus, lost their flexibility and that is what makes them leak and with time, may crack. The mileage of oils which are high are made in such a way that, they have a seal conditioners which are able to pass through the seal pores tolmake sure that their shape is restored and flexibility is increased.

In certain cases, the rubber seals are designed to be able to swell to stop the leakage. The high mileage oils also have higher viscosities and more viscosity index improvers.

This, in the long run, results in the seal piston to cylinder clearance to be better and thus no squeezing out as from the larger engine bearing clearances. They have a high dose of antiwear additives which help in slowing the wear process. So if your vehicle is older, the above features may mean a lot to you than what you might get from a full synthetic, at an affordable price. Oil is not just oil.

Difference between 5w30 and 10w40 Motor Oil

When you go to purchase, you will get a huge range of options available at various prices.When the car engine runs, oil pumps through it and protects from mechanical wear. Nowadays, the automobile industry is flooded with a variety of types, weights, and formulation of motor oil. The differences between 10W30 vs. Gaining an understanding of the working of the grading system is necessary to know about the differences along with fluid viscosity and behavior of oils. As the technological advancements are happening at breakneck speed, motor oil has also covered a long way from what it was in its early beginning.

Since oil is more resistant to flow, water flows at a faster rate.

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Therefore, Viscosity is an essential element of a lubricant. Car engine oil lubricates various parts of the engine. One of the best maintenance tips is to buy engine oil that remains unaffected with the fluctuations in the temperature.

This blog will be of great help for those who want to know about the differences between 10W30 and 10W The thickness or measurement of the oil viscosity becomes easy when reading the numbers like 10W30 will help know oil weight.

The oil is thinner in case of lower weights, while higher weights show thicker oil. In a car engine, knowing the movement of the oil will help understand its uses. For example, thinner oil is best during the initial stages. However, it can be a cause of concern when the engine heats up.

The viscosity of a liquid continually changes because the oil runs through the engine. As discussed, motor oil adjusts with the changes in temperature. Due to the increased motion of the molecules, the oil becomes less viscous when it heats up. Therefore, it is imperative to keep it in mind when purchasing categorizing oil. In order to keep the car engine functioning well, it is necessary to know about the change in viscosity. The thin oil is perfect when the engine is cold.

However, the same is not ideal when the engine is hot. Therefore, finding multi-weight oil is the surefire way to be assured that oil will not thin out too much when the engine works. As temperature changes, the long-chain polymers present in oils expand and contract accordingly. They alter the way the oil behaves. Since they are designed as per the needs, they are thin when cold, and not thin at high temperatures. The number before the W tells that the oil weighs in cold condition.

During the weight measurement of multi-weight oil, having an understanding of the numbers will help immensely. The second number shows the temperature of more than degrees centigrade.What oil should I use in my car? Most car owners take their vehicles to the garage for the oil change. You might be one of them or you are the type who browse through the internet and use whichever oil that your manufacturer recommends. Although either scenario seems to be okay, it is important to know a little more about what you are feeding into your car and having information concerning the best oil for your car.

If that is your question, then you are on the right path. It is necessary to compare the properties and specifications of engine oils so that you can know which oil to use in your car. X and y stand for the viscosity of the oil while the W stands for winter. The Society of Automotive Engineers SAE established the numerical code system which they use to grade the motor oils in accordance with the characteristic of their viscosity.

Due to the fact that the viscosity of oil changes with the change in temperature, several oil grades were established in order to provide protection for the engine of the vehicle across various temperatures.

The number before the W describes the viscosity of the oil when temperatures are at their lowest. If the number is lower, then it means the oil is thinner and thus, best for a cold start or cold temperatures performance. The number that appears after the W describes how thick the oil is when the engine is operating at normal temperatures. Multigrade oils such as 10W40, 5W30, are normally used widely because of the fact that, under all but extremely cold or hot conditions, they are thin to allow them to flow at temperatures which are low and at the same time, thick enough to allow them to perform very well when the temperatures are high.

This means that the choice of viscosity would be different depending on the temperatures of where you stay.

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The x and y according to SAE, can be represented by viscosity characteristics ranging from 0, 5, 10, 15, 20,25, 30, 40, 50 and Viscosity is the resistance of liquids to flow. Those which are runny and very thin are normally given a viscosity that is lower while those which are consistent and very thick like honey, are given a high value of viscosity. It is important to remember that, engine oils change their viscosity when put in different temperatures, depending on the weather outside.

As concerning the kinematic viscosity, the numerics are normally assigned based on the ability of the oil to flow via an average orifice when the temperature is regular. If it takes the oils longer periods to pass through then it means that the SAE code assigned will be high because the viscosity is high meaning, 5w30 has a higher viscosity than 5w It separates oils into mono or single grade and multigrade.

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For an oil to be termed as Multigrade, it has to fulfill two viscosity specifications and the viscosity grade will consist of two numbers such as 5w20 with 5 representing the low-temperature viscosity or winter, and 40 referring to the high-temperature viscosity or summer. Most of the engine oils that are available in the market are Multigrade. Monograde oils are normally restricted for a specific usage like lawnmower oils. In comparison, Multigrade oils seem to be the preferred option for modern engines.Log in or Join.

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Adventure Rider. Joined: May 22, Oddometer: Location: Somerset. United Kingdom. Hi there. Ktm specify 10w50 but i am having problems finding this grade,will it do any damage running 10w40 instead of what ktm recommend? Not wishing to start a discussion on which oil is best,we all have our favorites,but can somebody explain what the difference is between 10w40 and 10w50? Ktm recommend 10w50 for my SM but i am having problems finding it locally,will it damage my engine using 10w40 instead of what ktm recommend?

I use silkolene semi synth in my DRZ but its no problem to get silkolene fully synth but only in 10w40 grade,the same for castrol power 1,10w40 only.

Hope you can help. Due to the internal bearing clearances and temperatures, the designers of the LC8 engine have specified 10W50 wt for ambient temperatures above 0 deg C. The first is the weight of the oil when it's cold.

The second is the weight of the oil once it gets hot or to operating temp. Try to find what your bike calls for. It's not a good idea to run thinner oil in the heat of summer. ADV Sponsors. Put it this way, for the new s KTM had to issue a service advisory switching to 60 weight 10w60 from 10w50 due to bikes experiencing premature engine damage.

The cold weight is more of an issue when starting the bike, 10w goes way down, if you're in a warm climate, a 15w50 would probably be fine year round, maybe even a 20w GGDMay 23, Jody HMay 23, Harley Davidson dealers will have xW weight oil on the shelf. The 50 weight oils are recommended by almost every V-twin manufacturer. SadlsorMay 23, The MCN study you referenced reminds us of that old adage, "If you repeat a lie often enough, it will be believed as truth.

Downtime Files questions are usually answered by AMI staff. Both are synthetic and meet the spec required by the KTM engine. I haven't had much trouble getting hold of either here in the UK. DirtyADVMay 23, Not sure if they recommend a 5W40 och 5W50 oil for winter usage, but im sure it was a 5Wsomething. And when its below zero at least my bike with 10W50 can be hard to start And in the EC 2 stroker with electric starter it was a pain to get it running since the enginge was hard kick when it had been outside and it was below outside if im going to use a bike another winter im going to get some thin oil that is for sure.

BTW im talking Celcius not sure what that transforms to in Farenheit. If you're dealer's got 10W40 Silkolene on the shelf then they do a 10W50 fully synt which he should be able to order. I've been running it for a while now and it's my prefered option. Failing that Hein Gericke do Motul 15W50 fully synt. Cheers for the info.

I can get shell ultra 15w50 and silkolene 15w50 but the book recommends 10w


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