5w40 vs 5w30. Car owners have been 5 days ago · Can you mix 5W30 and 5W40? Technically, yes. Changes the list of approved oils slightly for mine. See full list on mechanicspick. There aren't as many choices for full synthetic oil in the 15W40 viscosity. Dec 5, 2018 · Furthermore, a 5W40 (especially a non-synthetic) can often be thicker at cold temps than a 5W30, even though their "cold" weights are the same. Feb 28, 2020 · 5W30 vs 5W40 is a decision made by thousands of car owners. No one has been able to answer with proof from cummins or stelantis what grade oil comes in the current 6. As a car driver, you have to know the differences between these two. Among the most popular viscosity grades, 5W30 synthetic engine oil and 5W40 engine oil dominate the market, each offering distinct advantages. Too thick for -F temps. Nov 22, 2023 · What's the difference between 5w30 vs 5w40 engine oil? This article will provide you with all the relevant information necessary, including a full comparison. These figures aren’t just random – they play a crucial role in the health and performance of your vehicle. Both have different characteristics; the first one, 0w40, is perfect for freezing point climate while 5w30 is during sweltering days. Mar 21, 2025 · Differenze principali tra 5W/30 e 5W/40 Olio 5W/30: È un olio più fluido, che offre maggiore efficienza nei consumi di carburante e può essere utilizzato in motori più moderni, che necessitano di oli con bassa viscosità. 5W30 is suitable for operating temperature between -25°C and 25°C, and 5W40 has a range of between -25°C and 35°C. 5w40 5w30 oil is designed to operate at temperatures as low as -25°C, but is also a great choice for warmer climates that reach up to 25°C. Nov 21, 2021 · The 5w30 motor oil is generally used in diesel engines and patrol. Find out which oil is better for your car and see the top 5w30 oil reviews. 5 days ago · 5w30 vs 5w40: oil characteristics When it comes to choosing the right engine oil, understanding the differences between 5w30 and 5w40 can make a significant impact on your vehicle's performance. But, I did use a 5W-40 once, no problems. It offers quicker lubrication and less wear. The only difference would be an insignificant loss of fuel mileage with the 5W-40 so I'd use whichever is easiest to source. Nov 27, 2022 · Learn the differences and similarities between 5w30 and 5w40 oils, their viscosity, temperature range, fuel consumption and more. 5W-30 has a lower viscosity at low temperatures, making it more suitable for 5W30 and 5W40 are some of the most popular types of oil used for car engines. 5W40: Winter (W) Rating: Same cold-flow performance as 5W20 (-30°C). 5w30 In Toyota The Toyota management recommended their clients to use a 5w30 motor oil. This section lets us compare 5w40 motor oil and 10w30 motor oil in fuel economy, hot weather, and viscosity. Choosing the right engine oil is crucial for maintaining your vehicle’s performance and longevity. Mar 4, 2024 · Mystified by the differences between 5w30 and 5w40 engine oils? Delve into how these grades impact your vehicle's performance and longevity. Aug 11, 2025 · 5W30 vs 5W40 focus on . They used 5W-40. (EDIT: I had 30 and 40 backwards) Sep 27, 2021 · If you found yourself contemplating between 5w30 vs 10w40 motor oils, here’s a detailed comparison of these two motor oils of different weights and viscosity. These oils have universal characteristics that allow their use in various engines. No point in mixing graders like that off a fresh fill. Mar 24, 2025 · Wondering what's the difference between 5W-30 and 5W-40 oil? Our Chief Mechanic goes into detail about their recommended use. 52. 5w40 for hot weather/ high temperatures 5W40 is thicker at higher temperatures and remains more stable than 5W30 in hot weather conditions. 7 from factory, 10w30 or 5w40. 10w30 has a narrower viscosity range. And, FWIW, MB has changed the spec for this car to 229. Can you mix 0W30 and 5W30? Mixing is not ideal due to differences in cold-start viscosity. Both oils share the same winter rating (“5W”), so the cold-start performance won’t change much. Apr 16, 2022 · 5w30 vs 5w40 oil: What's the difference? What's the meaning behind 5w30 and 5w40 in your car's oil? Motor oils come in a variety of brands, viscosities, and prices. Alors qu’elles présentent les mêmes caractéristiques par temps froid, il n’en va pas de même lorsqu’il fait chaud. In general, 5w30 is a great multi-grade oil for different temperature specters. 0w-40 Vs 5w-30 (What’s The Difference?) There are a few key differences between 0w-40 and 5w-30, including their oil grade, viscosity, temperature range, and fuel efficiency. Anyone have any preferences by viscosity? Thanks everyone! Jan 30, 2025 · There is a benefit to oil longevity using 15W40 versus 5W40. Read on. On the other hand, the motor oil 5w40 is a motor oil that has a weight and viscosity tested by the society of automotive engineers of what they call the SAE. The viscosity is an important consideration in all of these motor oils. 5W40: Comparing Motor Oil Viscosity for Performance & Efficiency EllieB Ever wondered what those cryptic numbers on your motor oil bottle mean? You’re not alone. Jul 2, 2020 · 2019 Ram 2500, 6. Only mix if absolutely necessary. A 5w30 motor oil is a multi-graded motor oil that would range from a high viscosity grade of about thirty (30) into a lower viscosity of five (5). Highlighting features of 5W30 5W30 is a type of motor oil that 5W30 vs. Pick anything with MB approval and you'll be ok. I switched over to the Shell Rotella T6 5w40 several years ago for the quality of the oil, easy availability and price, no regrets. Mar 10, 2024 · 5W30 motor oil has a lower viscosity, meaning it flows more easily at colder temperatures than 10W40 motor oil. The second number in their viscosity grades (30 and 40) reflects their viscosity at operating temperatures, with 5W40 oil being thicker than its 5W30 counterpart. 51. Find out which oil suits your car better based on your climate, driving style, and engine type. There is a Mobil 1 5W-30 that is approved, the ESP version, but it is European and you would have to order it. They perform better at extreme temperatures and typically contain additives that enhance engine health and operation. The flashpoint of D1 ESP 5w40 is one big difference compare to TDT or other CJ-4 5w40. Cummins recommends 10w-30 above zero, REQUIRES 5W-40 below zero. More precisely, 5w30 vs 5w40 types of oils. Copy and paste a small part: Also, according to Schaeffer's Oil, synthetic blend will hold the additive package longer than pure synthetic. However, for providing higher pressure, 5W40 is superior. However, 5W40 is thicker at high temperatures, which could slightly alter performance. 7 Cummins, towing a 10K fifth wheel in Texas. A large variety of motor oils is available on the market. Mar 26, 2024 · 10W30 is a multi-grade oil with a viscosity of 10 in cold and 30 in heat. For colder regions, 5W-30 is the clear winner, while 10W-30 shines in warmer climates. Each oil type has distinct properties suited for different driving conditions and vehicle requirements. I had dealer change the oil and use full synthetic. com Dec 23, 2024 · Both 5W30 and 5W40 have the same cold-weather viscosity, ensuring easy engine starts in freezing temperatures. Deciding which is the better of the two can be hard but it all depends on certain factors. The lower the number, the better the oil flows when the engine is cold. As far as choosing Valvoline Blue 15w40 or Shell Rotella 15w40, both are good choices. Aug 3, 2025 · Time to change the oil, and I'm seeing 5W40, 15W40, conventional vs synthetic, lots of options. Oct 4, 2016 · Do you think I'll have any issues mixing 4 litres of 5w-40 with the 2 litres of 5w-30 I already have? Or should I get them up for sale and buy two 1 litre 5w-40's :? You're better off just selling the 5w30. I change the oil in my Cumminz'z every 5000 miles whether they need it or not - I feel there's enough soot buildup over 5000 miles to warrant fresh oil that often, especially for the heavy hauling I Feb 29, 2024 · It had nothing but 5W40 Chevron Delo 400 or Rotella T6 in it, oftentimes with oil change intervals of 13. Yours should still be 229. According to this article, factory fill is Valvoline Premium Blue, synthetic blend, 10w-30. Many drivers find themselves puzzled when choosing between oils like 5W30 and 5W40. This comprehensive guide explores the difference between 5W30 and 5W40, helping you make an informed decision based on your Oil decision : 0W-30 vs 0W-40 vs 5W-30 vs 5W-30All times are GMT -5. Viscosity The viscosity of 5w40 motor oil has a viscosity index of one Sep 8, 2024 · Now that we have a better understanding of motor/ engine oils, let’s dive deeper into 0w-40 and 5w-30, to understand the difference between the two. 5w30 In Nissan Nissan management recommends 5w30 motor oil to keep its engine Dec 11, 2015 · When Delvac 1 ESP 5w-40 was being released, there was talk of a splash of ester being in the formulation, for whatever it's worth. 30 vs. If you drive in colder temperatures or want better fuel efficiency, go for 5w30. Feb 11, 2025 · Top 5 the best 5w40 oil vs 5w30 Reviews The choice between 5W-40 and 5W-30 motor oils can impact engine performance and longevity. Can I use 5W-40 oil in a car that requires 5W-30 oil in an emergency. Here are a few features of both these types of oils. 5W40 is thinner at cold (5) and thicker at heat (40), versatile for varying temperatures. On the other hand, if your engine runs hot or you drive a high-performance vehicle, 5w40's thicker viscosity provides better protection and stability. It is also more fuel efficient. Dec 8, 2021 · What Is the Difference Between 5w40 and 10w30 Oil? The 5w40 motor oil and 10w30 motor oil might have similarities, but they also have differences. Among the many options, 5W40 and 5W30 are frequently compared, leading many car owners to wonder which is the better choice for their vehicle. 5k to 15k miles. Sep 24, 2019 · Since my car recoomends using low HTHS oil - 5w30 ACEA A5B5, I was htinking to swith to 5w30 ACEA A3B4 (higher HTHS, because I dont care about 1% worse fuel economy, and try to protect engine as much as possible, but also for the same reason I was thinking of using 5w40 at least on summer months). In terms of oil flow, 5W30 has greater flow than 5W40. 4K views 5 replies 2 participants last post by Lins Jan 11, 2025 24Megacab Discussion starter May 5, 2019 · I used to use the Valvoline Extreme 5w40, great oil. Since Michigan usually never gets extremely cold or extremely hot on a normal basis, would a 0 or 40 weight oil really be necessary or have any real advantages? Any real Nov 21, 2021 · 0w40 Vs. So, 5W30 has a lower viscosity than 5W40, making it a better choice for colder climates or during winter months. Composition & Additives Base Oils: Both grades commonly use synthetic base stocks (Group III/IV), but 5W40 may include more viscosity modifiers. The bigger the spread between the winter number (the 5 or 15 in this case) and the operating temperature number (40 in this case) the more viscosity modifier additives have to be used to achieve the bigger number spread. Jul 20, 2024 · Highlights Understanding the differences between 5W-30 and 5W-40 oils is essential for making an informed decision about which oil is right for your vehicle. These insights aim to help readers make Nov 27, 2023 · By this logic, 5W40 is a better motor oil than 5W30 for turbocharged engines. In this text, we’ll Jul 1, 2025 · Choosing the right engine oil can feel like navigating a complex maze of numbers and acronyms. So, which oil do you choose between 0w20 and 5w40 engine oils? Aside from your engine’s makeup, there are a number of other factors that influence the In general, if you're doing any type of hard driving (even on the street), autocross, or going over 3k intervals, it's suggested you run 5w-40 because at most, that oil is going to shear down to a 5w-30 equivalent. Is there anything else I should purchase on FCPEuro that would assist in the oil change like the top that helps remove the oil filter? Or something to help take off the Orings? All help is Sep 23, 2014 · Either 5W-30 or 5W-40 will work just fine in protecting the engine. Apr 6, 2024 · While both 5W30 and 5W40 motor oils exhibit similar cold-weather performance, their viscosity discrepancies become more pronounced at high temperatures. I live in Atlanta, GA if this helps. But of course they now have 0 weight oils too. Olio 5W/40: Ha una viscosità più alta, il che lo rende ideale per motori più vecchi o per condizioni di guida più difficili, come alte temperature o sforzi elevati. Jan 11, 2025 · October's Cummins of the Month, Pumpkin Spice (fall / halloween), is now open for entries! Valvoline premium blue extreme 5W40 Used Oil Analysis Jump to Latest 1. Jul 11, 2023 · 5W30 vs 5W40 –Outstanding Features The main purpose of motor oil is to protect your car by reducing friction and wear of the movable parts. Routine maintenance necessitates knowledge of the best oil for your engine to ensure peak performance. The '5W' indicates the oil's flow at winter temperatures, making 5W30 ideal for colder climates, while 10W40, with its '10W' rating, is slightly thicker in cold conditions. 5w40 Summary of 5w30 Vs. 2. . Feb 20, 2024 · Learn how 5W-30 and 5W-40 engine oils differ in viscosity, temperature performance, engine protection, and fuel efficiency. Jan 25, 2025 · Choosing between 5W-30 and 10W-30 boils down to your climate, driving conditions, and manufacturer’s recommendations. The time now is 06:55 PM. Out of which 5w30 and 5w40 are the most preferred choice of the people out here. 5W-40 What's the Difference? 5W-30 and 5W-40 are both types of motor oil commonly used in vehicles. It was often hard to find compared to the Valvoline Blue 15w40. Jetzt lesen! Jan 14, 2024 · In this article, we learn quite a bit about the types of engine oils and their viscosity. The difference lies in their high-temperature viscosity, with 5w40 being thicker at higher temperatures than 5w30. Oct 13, 2010 · Note that the Castrol Syntec 5W-30 sold in America is NOT the same formulation as the Castrol 5W-30 being sold at the BMW dealerships. The truth is, there’s no universally “better” oil; the optimal choice depends on a variety of factors, including your car’s engine type, the climate When choosing between 5w30 and 5w40, it's all about your engine's needs. Dec 17, 2023 · 5w30 and 5w40 are motor oil grades, with both providing good cold start performance. 2007 130i LE - BMWP Exhaust, Strut Brace, Air Filter, Short Shift kit and Handbrake. On the other hand, 5W40 has a slightly higher viscosity, which can provide better protection for your engine in higher temperatures or hot weather conditions. However it also says I can use 5w-40. However, some motor oil can be a good match for 5w30, such as 0w40 and 5w30. 2 days ago · Wir verraten Ihnen, wie sich 5W30 Motoröl von 5W40 Öl unterscheidet und welches Öl besser ist. 0w40 Vs. The numbers in their names represent their viscosity ratings, with the first number indicating the oil's viscosity at low temperatures and the second number representing its viscosity at high temperatures. Operating Temp: Thicker film (SAE 40+) at 100°C, protects under high shear/stress. I would definitely run 5w40 in the warm weather, but if it gets cold where you live you can switch to 5w30 because it will protect your engine better on ice cold starts. Each oil type has its advantages, and there's Sep 30, 2023 · 5W30 engine oils has a narrower temperature range then 5W40. This section reviews the top five products in both categories, highlighting their features, benefits, and drawbacks. You can use 5w40 100% of the time, below freezing or in hot weather. May 19, 2025 · 在車輛保養中，選擇合適的機油是確保引擎平穩運行和延長壽命的關鍵。5W30和5W40兩種常見機油，究竟該如何選擇？本文將從性能、適用條件和優缺點全面比較，幫助您做出明智決策。 What about 5w-30 vs 5w-40? I read on various posts the oil viscosity you select should be dependent on your area. Is that ok for year around use with our hot summers? Is 10w-30 even available in full synthetic Jun 7, 2021 · Pretty sure they come out of the factory with 5W40. Additives: Jun 1, 2023 · Les huiles 5w30 et 5w40 se distinguent par leur viscosité selon les conditions climatiques et par les types de véhicules pour lesquels elles sont adaptées. Cost 5w30 is typically more expensive. Generally, using 5W-40 oil in a vehicle requiring 5W-30 oil may lead to reduced lubrication and potential damage. Feb 21, 2023 · 5w40 is a wider viscosity oil than 10w30. Mar 2, 2023 · This is not another oil thread about what to use but info I'm sharing after getting back my oil report from Blackstone. 5W30 is thinner at operating temperature than 5W40, making it ideal for newer engines that require less resistance. 5w30 is ideal for operating temperatures ranging from -25°C to 25°C, while 5w40 extends its range slightly to -25°C to 35°C. Mar 17, 2008 · So my Turbo Hyundai recommends 5w30. 5w30 vs. 5W-30 vs. Just change my factory fill oil at Jan 26, 2020 · Not wanting to start a war here just looking for input! Most synthetic diesel oils come in the 5W40 viscosity. Apr 19, 2014 · I have the OM642, 90k miles, and still use 5w30, because it calls for it and doesn't consume oil. 0W30 flows better in low temperatures May 6, 2020 · I know this is going to be a highly opinionated topic but which oil weight do you guys use/recommend? 5w-30 or 5w-40? My indy recommended moving to 5w-40 as he said it helps with oil consumption on these cars and also that the slightly heavier weight will help reduce wear, keep oil in the May 8, 2025 · 10W-30 vs 5W-40 engine oil explained – Know which is best for your car’s performance & engine health in 2025. Apr 25, 2025 · Synthetic vs Conventional: Choosing the Right Oil Synthetic oils, such as those available in 5W-30 and 10W-40 grades, usually offer superior wear protection compared to conventional oils. 40: The second number refers to the oil’s thickness at high temperatures. koxq vovbq nqdeh md00 bj1kpo v6e sk8 nfv05u sk7 9q