The number of the oil is showing a lot of different viscosity in high and low temperatures. After considering the characteristics of oils, and understanding the markings and classifications, it is possible to draw conclusions and conclusions. Further, the oil will become less viscose and would not lubricate the engine components appropriately. The air-cooled system doesnt have any filter because the unnecessary elements of the oil are directly exposed to the engine. Thin oil will heat quickly and reach the optimum working temperature. Does it affect performance? So, does this imply that what determines the oil to use for your car is the temperature of your city or state? On the contrary, at a higher temperature, 5w30 has a viscosity rating of 30, which is also fewer than 10w40. Both 5W30 and 10W40 are suitable for engines. Obviously, a 10W-40 is thicker than a 10W-30 at high temperature. 5w30 is thinner and specifically designed to run through engines that are prone to clogging whereas 10w40 oil only gets thicker as the temperature rises. Since these oils are designed to work under different conditions, so they function differently. But what is the viscosity of motor oils? So, without further ado, lets get into the details. A "30" high temperature viscosity grade is common (as in 5W-30, 10W-30, etc) and is suited to many engines. But we don't recommend it and here's why. However, the motor oil 10w40 motor oil is not on the recommendation list. 5w30 oils are specified for most modern engines, and while its really good, it is not preeminent to other oils. Two numbers define the viscosity of motor oil at their naming. The 40W hot visc is a complete non-issue. READ SOMETHING ELSE If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters. If you use 10w40 instead of 5w30, it wont perform as well as 5w30 at low temperatures. It is synthetic motor oil. One most common type of difference between the two of them is their viscosity. Thats because the temperature is not a variable factor, 90% of the bad things caused by thick oil are eliminated. How to choose the best 5w-30 engine oil for your car? If you need a 10w-40, you can use 5w-40. If the brand recommended by your OEM sells their 10w40 or 5w30 oil at a high price, its cool to find a cheaper universal equivalent of the same weight and specs. Both oils are good for modern engines, and you can get them in different stores. The answer is, choose the one that your user manual says. And if you mix them, you should choose oils of the same manufacturer. However, 10w40 is suitable for hot weather or heavy loads. It depends on a lot of things. But you can also bypass such conditions with 10w40, as it continues to provide good performance even at 32F. Nov 29, 2009. Because the gasoline in 5w30 is thinner and more able to reach the tough parts of the engine than the fuel in 10w30, 5w30 is more efficient and less viscous. There is no recommendation about the 10w40 motor oil for Toyota engines, but you can still use it if you want. What is the difference between 5w30 and 0w30 oil? There is even a special blurb in the manual that states that if you live in the desert, or tow regularly, or high temperature areas, you should run a higher viscosity oil. Ata higher temperature or when the engine is warm, its viscosity level is at 40, and at normal or low temperature, the thickness level is rated at 10. Everything is relative, look not only at the SAE but also directly at the yield point and dynamic viscosity. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'yourgreatcar_com-large-mobile-banner-1','ezslot_5',628,'0','0'])};__ez_fad_position('div-gpt-ad-yourgreatcar_com-large-mobile-banner-1-0');Also read: 4 Bad Things that Will Happen if You Dont Change Motor Oil. So, whichever type of oil you use, it is vital to understand the grades first. And these temperatures are present on the cylinder walls and on the exhaust valve stems. Copyright 2023 Auto Care Aids | All Rights Reserved. Even if you put together synthetic and conventional blends of these motor oils, they show no harm to your vehicle. 10w40 oils are not made for smaller engines. We use cookies. The 50 refers to the thickness of the oil when the motor has been running for a while. 5W-30 is a thinner oil than 10W-40 and flows quicker at a cold temperature. Are There Any Situations When You Can Put 10W40 Instead of 5W30? How would you describe an honorable person? We believe that you should never use 10w40 instead of 5w30. Yet, many car owners and even quite a good number of motor mechanics will use non-recommended motor oils for different car brands and models. (Answer Explained)Continue, Address:1105 Aztec Rd, North Pole, Alaska 99705, USA, Do You Know Who Makes Polaris Oil? No! 5W30 vs 10W30 Whats The Difference? 20w-50. Thus, 10w40 motor oil is preferable at a higher temperature since its viscosity at a low temperature is pretty high. As a result, it will have an increased fuel economy. Is 10W40 the same as SAE 30? We can say this one will provide higher mileage than 5W30. Thus, the delay in starting the vehicle. Accidentally Used 5w40 Instead of 10w40: Is It Ok? The 5w30 however will give you better mileage if its older as its thinner. Of course, a warm viscosity will be a lot heavier because of the requirement of the engine. This will cause major clogging but your oil will also have a lower chance of reaching all the components its supposed to. High friction would also mean shorter life of the engine. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'gardengild_com-leader-4','ezslot_14',111,'0','0'])};__ez_fad_position('div-gpt-ad-gardengild_com-leader-4-0');But, 10w40 is a balanced oil that stands in the middle of both the car and lawnmowers engine. In summary, people interchange 5w30 motor oil and 10w40 motor oil. Since the number on the cold start temperature is lower in your question, 15W50 motor oil would be faster to start up your ride, as compared to 20W50. However, you cannot see this becoming possible in the machines present in a lawnmower. The answer to this question will depend on your vehicle and a lot more factors. Both oils are equivalent at operating temperatures of 40Wt. With thicker oil, the lead time of engine warm-up is increased. For northern regions, low winter temperatures better suit 5w30, but it all depends on the loss of fluidity temperature and the dynamic viscosity of a particular oil brand. The W itself stands for Winter and designates how oil will behave while cold. So Can I use 10w40 instead of 5w30? It would be best if you do not go for 10W40 to 5W30. Yes, we know that every auto mechanic can have a different opinion on this. Can You Use 10w30 Instead Of 5w20: External Temperature The lower the number before the "W" in these oils, the thinner the viscosity of the oil. (Answer Explained). 10w40 motor oil is not recommended for Nissan engines. The recommended oil for all Toyota engines is 5w30 motor oil. But it is not recommended and wont bring any substantial performance boost to your cars performance and lifespan. It can cause harm to the engine in the long run if the oil is not pure and eligible for such an engine. It is advisable to use a 10w40 oil if the temperature of your city is below 30 degrees Fahrenheit. You also have to consider the composition of the oil. Where 5w30 is the best low viscosity oil for colder areas, 10W40 is the best high viscosity oil for hotter regions. 2. The automobile manufacturers are persuading engineers to increase the fuel economy so that they will meet the regulations of the government and so that they can also provide an edge to their competitors. A 10w40 oil with a higher viscosity protects engine parts better at higher temperatures or when the car is running at full speed. It is always best to follow the user manual for the optimal performance of your car and its engine. Everyone makes his or her choice, based on what he or she is pursuing and what he or she wants to get from the engine oil and from the car as a whole. If you found yourself contemplating between 5w30 vs 10w40 motor oils, heres a detailed comparison of these two motor oils of different weights and viscosity. The smaller number, (the 20 part of 20w-50) describes how the oil behaves at 40 deg C and a 20w at 40 deg C is about 10 times thicker than your engine wants. To answer it shortly, viscosity refers to the thickness of any liquid and is measured with water as the standard viscosity level. But 10w40 oils have an added advantage; they typically offer more protection than lighter oils. Using 10w40 instead of 5w30 is not always a bad decision. 10W30 motor oil is a diverse oil that works for every situation. Out of many engine oil types available in the market, 10W40 and 5W30 are the most common ones. Everyone knows that engine oil, in addition to its main task to lubricate engine parts, to minimize its wear has a number of other functions. Home - Cars - 5w30 vs. 10w40 Engine Oil: Differences and Can You Swap Them? 2023 Car, Truck and Vehicle How To Guides - Vehicle Freak. Address:454 Patterson Street, Houston, TX 77074. It is because not every part of the car, especially the engine, requires the same level of thickness or viscosity. It will maintain its film strength, and it will also keep the engine oil pressure under check. Regardless, if youve been using 10w40 and wish to switch to 5w30, you must take into consideration how the temperature of your city could get so high or so low. A 10w-40 is better at around 6 times thicker and a 0w-40 is much better at about 4 times thicker. Its not recommended to mix oils as this can cause a lot of damage to the inside of your vehicle. This depends on so many things. As stated above, be sure to keep an ear out for any unusual noises. Can I Use 5w30 Instead Of 5w20 In My Honda? Use 10w40 for those cars which accept it. So, that once made me think, can I use 10w40 oil in my lawnmower? In this garden gild guides well discuss the following:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'gardengild_com-box-4','ezslot_13',122,'0','0'])};__ez_fad_position('div-gpt-ad-gardengild_com-box-4-0'); Any electrical machines, vehicles, or motors are runner by oils. If the motor oil will be thicker, it will reduce more tear and wear and provide an extension to the life of your engine. Yes, it is okay. However, as its number suggests, it is much thinner than 10w40. Both motor oils are designed to work in different conditions, so they function differently. They have, Read More Do You Know Who Makes Polaris Oil? But when reaching operating temperature, the oils give exactly the same protection. But in actuality, it finds the thinness as well. It may be harmful to your car and the engine. Im a horticulturist by profession. So, if you are driving your car in a colder place, this thin oil is the best choice for you. He also edits and writes articles for the IronSet blog where he shares his experiences. Weve seen many car owners swap out their 5w30 engine oil for 10w40 engine oil. Follow the recommendation of the car manufacturer. Or, to drive at a hot temperature, you can use 10W40 as your ideal engine oil. This means that the 20w40 motor oil is thicker if the engine is running. Price: 5w30 is more expensive, 10w40 is cheaper. The recommended oil for all Toyota engines is 5w30 motor oil. Well, if you put 10W40 instead of 5W30, your car engine will face a different problem. 5W0 are essentially the same at operating temperature. Then, after calculation, they choose the motor oil that has the least tradeoff so that your car gets the maximum profit. The difference between 10W-30 and a 10W-40 is the high temperature viscosity. So, if you are driving your car at a hotter temperature, this thick oil is an excellent option for you. If we separate the two parts of the grade 10W40, we will notice the first difference. 5w40 has higher viscosity hence it is not suitable at all temperatures. Some are included with additives, lubricants and adhesives. Contents Do not use 10w-40 instead of 5w-30 Yes, we know that every auto mechanic can have a different opinion on this. 10w40 has a slightly higher viscosity than SAE 30. Here, we can see a number before the letter W and a number after the letter. It's the 2nd part of synthetic oil that protects your engine when the car is warm. How to Easily Bring Back to Life any Old Car Battery and Save Tons of Money (click to watch), 4 Bad Things that Will Happen if You Dont Change Motor Oil. That is to say, the engine that runs a car will generally look for a different kind of oil than the engine which runs outdoor equipment like lawnmowers. what is the Difference between 5w30 and 10w40? However, 10w40 is better suited for hot weather or heavy loads. If you are not finding the exact one only then, you can consider switching between engine oils. Which is Thicker? This is because not every part of the car, especially the engine, requires the same level of thickness or viscosity. Andrey knows everything from warm-up to hard workout. Mixing 10W30 with 10W40 Some say that mixing them is fine as long as you dont live in freezing weather. 10W-40 is recommended for cars that have more than 150,000 miles and is often a conventional oil. It means any liquid might have a higher or lower viscosity number compared to water. This means that any fluid can have a higher or lower viscosity than water. But, 10w40 is multi-weighted. Harley Davidson is a brand that people trust, Read More Do You Know Who Makes Harley Davidson Oil? While the cold weight isn't significantly different, the difference in the warm weight means that the 5w30 oil will be thinner while running at optimal temperature, which can cause damage to the engine due to insufficient lubrication. And when it happens, you need to replace the part, and car parts arent cheap. For example, 10w30 synthetic motor oil might work better than conventional 10W-40 oil to protect your engine pistons and bearing. 6 Common Reasons, Engine Power Is Reduced on Chevy Equinox: Meaning, Causes, and Fixes, How to Gap Spark Plugs With and Without a Tool, Why Engine Is Hot and AC Turned Off (Causes and Fixes). So given the 10w40 has both a higher first and second number, this is the oil with the higher viscosity. Similarly the oil viscosity will be higher and oil thicker than specified during summers. Such oil is needed, which fulfills all the demands of these engines and issuitable for them for the long run. (Answer Explained), Do You Know Who Makes Toyota Oil Filters? As posted above, mixing 5w0 will give you an oil that performs somewhat better in the cold than 10w40, but less good cold than 5w30, and that has a viscosity a bit higher than 5w30 but a bit lower than 10w40. Its best when starting the car, as the internal temperature of the engine is relatively low at this time when starting. Following bad things can happen if you put 10w40 instead of 5w30: If you use 10w40 instead of 5w30 in a car that is not used to thick engine oil, then chances are that it wont start at all. The engine will start right up and run great w/o fear of oil starvation. So as you can tell, theres a lot to think about when you change your oil as different ones work better for different things. It is a thinner type of oil that allows running the oil inside at a cold temperature where oil jamming is a significant concern. the huge problem is the other number though. Can you use 10w40 instead of 5w30? Now that we know 10w40 is more suitable for hot temperatures, you can accommodate this. And now this is important. On the other hand, the second portion of the grade number describes the thickness of the oil. Since both oils have the same operating temperature viscosity (30) and additives, they will perform exactly the same. 5w30 vs. 10w40 Nissan The recommended oil for all Toyota engines is 5w30 motor oil. It should be clear that a car needs both thin and thick motor oil for optimal performance. But when the temperature is higher, both motor oils similarly perform their intended functions (using the same viscosity). 10w40 oil can be the best choice for the lawnmower. My name is Hank, and I've been in the automotive industry for 27 years. There are no significant damages, but the main difference is between the 5w30 motor oil and the 10w40 motor oil is the viscosity difference at specific temperatures. My oil pressure is comfortably high (as it should be; the engine only has 60k on it). (Ans Explained), Do You Know Who Makes SuperTech Oil Filters? The best option is to always refer to your owners manual for the suitable and recommended motor oil for your engine. A 10w30 is an all-time suitable oil for your lawn mower no matter what is the temperature. You can use them interchangeably and would not likely even notice a difference at all unless it got really cold, then youd find the 5w30 most likely cranking easier at cold start. On a quick note, you could actually use a different oil (not the recommended in your cars owners manual) and nothing would happen to your engine at least not that moment. 2. This will leave you with an unlubricated engine as well as a clogged one. As a result, this multi-grade oil has minimal viscosity loss at a higher operating temperature. However, some car owners use non-recommended motor oils for different makes and models of cars at their discretion. It is however always best to switch back to the original oil as soon as possible. Therefore, 10w40 can be used when the engine is running and during the summer, while 5w20 can be used for cold starts and the winter. It is due to the deposits on their insider surface. The number before the W shows how thick the oil will be when it is cold or when the engine isnt running. When it comes to choosing, 10w40 vs 5w40 Motor Oil Many motorists when choosing, In this article, well look at the differences, Manual and Gas Powered Post Driver: How to choose and. In addition, the thickness or viscosity is known as the weight of the fluid. The rule of thumb here is to use 5w30 motor oil if your owners manual would recommend 5w30, and you should use 10w40 motor oil if your owners manual recommends 10w40 motor oil. Some engines might pose problems like overheating, excessive wear and tear, and poor performance if thicker engine oil is used. When buying motor oils, it is good to consider options from top brands because they are typically made with OEM-approved, premium additives. Also, you shouldnt use 5w30 in place of 10w40,especially in warmer conditions. The recommended oil for all Toyota engines is 5w30 motor oil. I would love to see how its put together. The recommended oil for all Toyota engines is 5w30 motor oil. Once again, be sure to check your vehicles user manual before changing any oil as some might not be compatible with everything. If you live in a somewhat moderate temperature zone where you dont have to face harsh temperatures, then you can use 10w40 instead of 5w30. Accidentally Used 5w30 Instead of 10w40: Is It Ok? The 5w30 has a viscosity of 30 at high temperature while a 10w40 has a 40 viscosity at high temperatures. Colder oil viscosity is only affected by the first number (with a "w").Dec 30, 2021 Is 10W40 better than 5W40? For instance, 5w30 isnt always recommended in low temperatures for all car models. Now, in the case of the 10w40 oil, if the temperature is lower, you can use the oil instead of 10w30 as viscosity remains normal. Again, 10w30 can also be used as the best multi-purpose oil as the oil acts like SAE 30 during 100 Celsius. The human body runs by the energy from food. My friends and I created this site to tell you a lot of useful things from the world of cars. Configuration of engine oil should match the design parameters of the engine. Such kind of oil is 10w40. But you cant use two different car engine oils at the same time. For each engine, there is one manufacturers suggested configuration of engine oil. One such case is with 10w40 and 5w30. With the increase of temperature, the viscosity of 10w40 also increases. Also, the thickness or viscosity is known as the weight of the liquid. The cold viscosity is referring to the thickness of the oil upon a cold start of the engine. Overinflated Tire by 5 Psi: What Will Happen? You will also lose an element of viscosity which means your oil wont be properly lubricating your engine. With their new Amazon Basics synthetic motor oil,, Read More Do You Know Who Makes Amazon Oil? Which engine oil is best? If you use 10w40 in place of 5w30, it won't perform as well as 5w30 in low temperatures. So its not surprising that many people ask, can I use 10w40 instead of 5w30? Some parts of the car need a thinner film to protect it from external influences, while others need a thicker film. And as much as motor oil is essential for your engine. They are Conventional, Semi-Synthetic, Synthetic and Racing oils. Conversely, at higher temperatures, 5w30 has a viscosity rating of 30, which is also less than 10w40. 5. One before the letter W and one after the letter too. Core components of the engine are used to a certain limit of friction. When Dwight Eisenhower gave the Atoms for Peace speech what constructive use of nuclear energy was he introducing? But these numbers can sometimes be misleading. High mileage 10w40, engine new 5w30, but first of all we look at the recommendation of the engine manufacturer. 10W40 engine oil will hurt 5W30 engines. Before making this big change, you must consult a professional mechanic. (Answer Explained)Continue, As an Amazon Associate, I earn from qualifying purchases. The oils quality is higher enough that it can be used seamlessly in your mower without a problem. Hence, using thicker oil will go heavier on your pocket as well. 10 Best 20W-50 Motor Oils Updated April 2021. Both 5W30 and 10W40 are suitable for engines. In theory, yes, you can switch from using 5W-20 to the 5W-30 because they have similar viscosity ratings. Hi, this is Clara Lee co-founder of this beautiful website. Critical engine parameters like spark timing, valve timing, and timing chain adjustment will be disturbed if you use 10w40 instead of 5w30. Thicker and high viscous oils give more mileage as we have already got to know that 10W40 is a thicker oil. Car users often pose this question on car forums that can I put 10w40 instead of 5w30 and vice versa. So, we can see, 10W40 is thicker than 5W30. (Ans Explained), Do You Know Who Makes MicroGard Oil Filters? So, be careful mixing between two different grade oils. 5w30 vs. 10w40 Engine Oil: Differences and Can You Swap Them? Also, the letter w refers to winter or low temperature. 5w40 offers better start-up protection and the smallest bit of fuel economy for the initial 5-10 minutes of the journey. On the other hand, if you know youre going to be driving somewhere long-term thats colder than youre used to then you might want to swap your oil out for a lighter one such as 5w30. There are a lot of oil weights to choose from, but do all those numbers and letters have anything to do with how your engine will run? For instance, 10w40 with a higher viscosity level is thicker and weightier than 5w30. Again, engines of other vehicles can go through higher viscosity oil. Transmission oil is essential to keep your automatic, Read More Dexron 3 vs. Dexron 6: Comparison and DetailsContinue, As an Amazon Associate, I earn from qualifying purchases. OTOH, the oil has a pour point of -39 (F and C are the same at -40), and will still pump with ease. But you could reap the benefits of using a thick engine oil nonetheless. Besides the recommended lawnmower oils, you can sometimes try something different like a 10w40 used in the cars. This energy is also required by the lawnmower that runs all day on your lawn. (Explained), How Much Is Rhodium In A Catalytic Converter? The 10w40 motor oil is not in the recommendation list for Mazda vehicles, but as a guide, 10w40 is preferable for hot weather or heavy loads. Its always best to check your vehicle owners manual before you switch out the oil just to be sure the engine can handle it. It works excellent and provides the best mileage in colder temperatures. If you use 10w40 in an engine for which 5w30 is recommended, then you will get poor engine performance in winter. This is why its best not to mix oils as you will essentially be left with an oil that cannot do its job in hot temperatures and eventually at all. Or at least read this article till the end, I will guide you that under what circumstances you can use 10w40 instead of 5w30. Most modern oils are 10W40 or even 5W40. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'yourgreatcar_com-leader-1','ezslot_3',176,'0','0'])};__ez_fad_position('div-gpt-ad-yourgreatcar_com-leader-1-0');The process of starting in an internal combustion engine is such that the current produced in the ignition coil is passed on to the spark plugs, which gives an initial push to the pistons. The 0w40 finds extensive use in European vehicle models due to the continent's coldness, which at times border to the extreme. No, every manufacturer has a reason for specifying a particular type of oil for their various car models. The difference in their viscosity level almost entirely defines their applications in car models. Take 5 Oil Change Prices How Much Is A Take 5 Oil Change? And, if the temperature is higher in that place, then the recommendation for your lawn mowers oil becomesclearer, which is to use 10W30. The motor oils cold viscosity is essential because it will dictate the lubrication. Manufacturers always recommend using a particular oil for their automobiles to boost their performance in all conditions. But 10w30 becomes like SAE 30 at a higher temperature and works best for your lawnmowers. Can I use 10W40 instead of 5W30 in my lawnmower? Technically speaking, 5w-30 engine oil can be replaced with 10w-40 engine oil. For example, 5w30 is not always recommended at low temperatures and not for all car models. As An All-Purpose Option. Is it ok to use 10w40 instead of 10w30? We have seen many car owners interchanging between 5w30 motor oil and 10w40 motor oil. If you drive in exceptionally cold weather, well below 32 degrees, you can use a 5W-30 oil, but even 10W-40 is still fine for use in sub-freezing outside temperatures.. A 10w40 is a thick oil, and as such, it wont flow too easily regardless of the temperature. As previously stated, 5w30 is much thinner than 10w40 so mixing the two will thin the oils. However, the 5W30 is not bad in mileage either. Thinner oils are easier to light even at temperatures under the negatives. Piston and cooling nozzles require increased oil flow. 10w-50. Also, both these motor oil feature different viscosity levels and are suitable for working under different temperatures. 5w30 is synthetic motor oil. So it wont take long to break down all the energy sources if the food supply is stopped. The 10w-40 is to thick and will not flow as well as 5w-20 which will result in more wear at start up since the oil will take longer to circulate. I'm the guy responsible for ensuring honest, informative, accurate and helpful guide to the reader. Mixing different oil weights can cause damage to your engine sometimes. Manufacturers always recommend using a particular oil for their vehicles to improve their performance in the operating environment. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[320,100],'yourgreatcar_com-box-4','ezslot_14',626,'0','0'])};__ez_fad_position('div-gpt-ad-yourgreatcar_com-box-4-0');If you go deeper into the names of these engine oils, then you would know that the first number in their code represents the cold viscosity and the second number represents their hot viscosity. These thicker oils have extra components such as conditioners, antioxidants, detergents, seal swells, and friction additives that make them great for older engines. A thick motor oil like 10w40 will provide a more solid lubricant and compensate for the excess wear of high mileage engines. Meaning, 10W-50 motor oil acts like an SAE 10W weight oil under 0C (32F), and an SAE 50 weight engine oil at 100C (212F). In heavy vehicles, 10w40 is already the recommended engine oil. It will increase your engines work capacity, HP, RPM and many more. If the manufacturer recommends using 5w30, then it would be foolish to use any other oil. 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. The slightly thicker oil film from the heavier base weight oil 10W can help protect worn engine bearings as well. However, these differences are not noticeable in normal temperatures. The 5w30 has a viscosity of 30 at high temperature while a 10w40 has a 40 viscosity at high temperatures. But strictly during the summers only. What happens if you put car oil in a lawnmower. Schematicdiagram of i engine. For assumption, you can use 5W30 for 7,000 to 8,000 miles. You wont cause any damage to your engine if you switch out the oil for a higher viscosity for a short period of time. Again, it is not suggested to switch in between other viscosity oils. What is the difference between 5W-20 and 5W-30 oil? The first number, 5, tells us how efficiently the oil works nicely in cold temperatures. However, 10W-40 engine oil is more viscous in hotter climates and has a better temperature spectrum. dubuque county jail inmates recent arrests, rock house farms accident, norfolk state football players,