Let’s take a more in-depth look at 5w40 vs 5w30 motor oil to see which one is right for your car. Navigating the world of engine oils can feel like traversing a maze, especially when you’re trying to determine the best choice for your lawnmower or generator. The main difference between 5w30 and 10w30 is that the latter has a higher Viscosity Index (VI) than the former. YES, as stated in the initial paragraphs above, is the straightforward answer. Your car manufacturer’s recommendation notwithstanding, mixing 5W20 and 10W30 won’t cause any harm to your engine. #1 · Jul 1, 2018. 30 weight goes from about 9. 10w30 oil provides a better seal and better protection than 5w30 oil because of its higher viscosity. Final Thought on Mixing 5w20 & 5w30. Even the oil mix of the synthetic and conventional blend will show you no harm to your engine. 4L. . While the viscosity difference between these two oils is minimal, there is still a difference. Thanks to their close viscosity, mixing the two oils will have no damaging effect on the engine. It gets really interesting when adding multiweight to straight weight. The primary distinction between 5W-20 and 5W-30 oils is their viscosity. 20W40 oils on the other hand work better at a bit higher temperature. 10w30 oil and 5w30 oil are of the same synthetic type. Can I Mix 10w30 and 5w30? Most oils will mix perfectly, provided they have a similar synthetic. 5w30 vs. Just like mixing full synthetic with semi-synthetic oil – mixing different viscosity such as the 5w30 and 5w40 is not a bad idea, especially if you are running low on oil. J. Briggs and Stratton approved 10w30 and 5w30 synthetics for lawnmowers, snowblowers, etc. So when you compare 5W30 vs 10W30, 5W30 oil has a lower number (5), implying the oil thins fairly in an extremely low temperature, making it a better winter engine oil than 10W-30. Return the 5W-30 for a refund and shell out the extra $3. When buying motor oils, it is good to consider options from top brands because they are typically made with OEM-approved, premium additives. #3. Yes, you can use 5w30 instead of 5w20 in your ford car. Joined Dec 2, 2002. Therefore, there is no problem in mixing 10w30 and 5w30 since one. Can I Mix 10w-30 and 5w-30? A lot of drivers mix motor oils of similar viscosities. But, even if you pour in the 10w30 without removing the old oil, nothing would damage the engine, but you’d notice a significant drop in performance as the oils try to mix and flow. Actually, a stack of 10w30 oils including a 5w30 HDEO on the approved CES 20086 list. It is safe to mix 5w20 and 5w30 as long as you follow some recommendations. Is it possible to mix 5w30 and 30w oil? You are correct that adding 1 liter of SAE 30 to 3 liters of SAE 5w30 permanently increases the viscosity of 5w30. What About Mixing Different Brands Of Motor Oil? For example, assume that you are using Quaker State 5W-30 in your engine and for whatever reason, you need to add oil during a long trip and only Valvoline 5W-30 is available. Because of the mixing of fluids, your. So we wind up with 8. Can You Mix 5W-30 and 10W-30 Oil? Yes, it is perfectly safe for you to mix 5W-30 and 10W-30 engine oils. It cost $2 a quart more too. 10w30 oil is thicker and designed for use in higher temperatures and heavier engine loads. This article is a must-read for those who want to fully comprehend the implications of switching between these two oil types. What About Mixing Different Brands Of Motor Oil? For example, assume that you are using Quaker State 5W-30 in your engine and for whatever reason, you need to add oil during a long trip and only Valvoline 5W-30 is available. Synthetic 5W-30 can be used in all temperatures. Of course, the two oils have different additives as there is a difference between viscosity index ratings. For equipment operated in hot temperatures, Vanguard 15W50 Synthetic oil provides the best protection. Most cars that recommend 0W-20 or 5W-20 do so for fuel economy reasons and can use 5W-30 with no ill effects. 8,146. Aug 28, 2019. In the case of 10W30 oils, the temperature range is -25°C/-13°F to 30°C/86°F. . So, it’s not suitable if you mixed 10w30 oil with 5w30. Castrol GTX MAGNATEC Motor Oil 5W30 Full Synthetic 5 L. Oil should be changed after the first 20-30 hours of operation and every 100 hours of run time thereafter. #8. The act is not recommended, but it is not prohibited also. 10w30 Nissan. However, because it is thinner it. Mixing the viscosity of oils will not have any effect on the engine. Can You Mix 10w30 With Gas? Oil and gas from 10W-30 can be used in a 2-stroke engine. Change the oil entirely at the earliest opportunity to ensure consistent protection. Yes, its fine. We recommend you take a look at your. The engine will not work correctly, and if you use the mixture for a long time, the engine will be significantly damaged. The short answer is, yes, you can technically use 10W40 instead of 10W30. But, we recommend you not mix or blend 10w30 and 10w40. But as the engine heats up, the 5W-20. It impacts the resistance of the engine to oil flow. Castrol, Valvoline, Pennzoil "conventionals" are all labeled "synthetic blend" in 5w-20 and 5w-30. Take a close look at the viscosity numbers on the product data sheets. . In fact, the viscosity difference between 10W30 and 5W30 is essentially neglectable. It’s not necessarily ideal, but doing so won’t cause harm to your engine. 5)/2 = 9. As far as 0w20 versus 0w30, it will be basically the same weight cold, at startup. However, the coolant in the oil definitly needs to be addressed. There is no mention of the 15w40 motor oil for these engines, so it might be better to avoid it. 5 puts it into the VERY thin 30 weight range. Sep 9, 2017. In addition, the different viscosities can cause the oil to sludge, clogging up your. This can cause reduced lubrication leading to wear on the engine parts. whereas 10W30 oils are more suitable for cars that run throughout the year in higher temperatures. Temperature Range There are several critical aspects that readily depend on the. Can 10w30 engine oil safely be used in place of 5w30 for a 2003. However, the difference in viscosity between the two can impact engine performance, particularly in specific temperature conditions. Pennzoil® motor oil is formulated with Active Cleansing Technology and is proven to protect engines in SAE 10W-30, 10W-40, 20W-50, 5W-20 and 5W-30 viscosities. On my last change, I mixed a 5W-20 with an HDEO 5W-40 and then topped up a bit with some 5W-30. Can I use 0W-30 instead of sae30? A: NO, this is NOT the same as 0W-30 oil. Therefore, 5W-30 is better suited for hot. Can you mix 10w30 and 5w30? General speaking, mixing 10w30 vs 5w30 oils should not cause issues as both have similar viscosities at operating temperatures. -for at least the last 40 or 50 years. In fact, race teams that use Mobil 1 regularly mix 10W-30 with 15W-50 to achieve the desired blend for the particular temps and race duration. If your motor oil will be in the engine during winter, use 5w30 motor oil. However, the past two times I've changed the oil I didn't notice this and used 10W-30 instead. Yes, you can mix 5w30 and 10w30 oils. It depends on how much ratio you use and how long you use the new oil mixture in your lawnmower. As far as we can tell, Mazda engines don’t use 10w30 motor oil. Temperature Range. Yes, you can mix them. Mixing SAE 30 and 10w30 is a terrible idea and might have you counting losses. This blog post will clarify the confusion and explain the difference between these two. If you're mixing the leftovers from 5qt jugs to use in your lawnmower, yes. So, Can you mix 5w30 and 10w30? Yes, you can mix 5w30 and 10w30 oil. Both the oils have the same viscosity (5W) though the viscosity index is different. It was a mix of Valvoline Synthetic, 10w30 and 5w30 and an AC Delco filter. This motor oil has a low viscosity, and this motor oil can also be used as a replacement for a 5w30 motor or 10w30 motor oil. Motor oils can be different from how thick or thin they are. If you drive hard, change the oil & filter more often. There is absolutely no risk of harming or potentially damaging the engine’s essential components by using 5W20 oil to top off a 5W30 engine. Key Point: Mixing different brands of 5W-30 oil can result in sludge formation. Older engines can use the SAE30, while the 10W30 is for modern engines. This means that the viscosity will rebalance and will create a new one. In winter weather the 0W oil will flow like a 0W oil, and the 5W will flow like. February 17, 2022. 5w30 oil has a lower viscosity than 10w30, making it slightly thinner. Synthetic 5W-30 can be used in all temperatures. When you have a question about motor oil — and this is an important one! — you’ve come to the right place. There is minimal viscosity difference between 5w30 and 5w20. It will not damage your. The short answer to this is no, 10W-30 oil is not the same as SAE 30. The discrepancy occurs when there is a sharp difference in the viscosities of two fluids that retards the thorough mixing. Can I Use 10w30 Instead of 5w30 in Summer. It’s pretty much okay to mix 10w30 with 5w30. Goes beyond CK-4 wear limits, delivering an average of 37% better than the maximum wear requirements. The difference between 10W-30 and a 10W-40 is the high temperature viscosity. The only difference between the two oils is the low temperature point, with the 5W30 oil functioning slightly better than the 10W30 oil. They can’t be mixed during low temperatures. For instance, some automakers recommend against mixing synthetic and conventional oils. #4. In cold climates, the viscosity of 5w30 is 5. I do use add oil to aim the grade to where I want to try. In most cases, combining two oils with different viscosities won’t harm your engine and is better than running low on oil. Read on for a guide on how you can mix 10w30 and 5w30 oil. It would almost definitely end up being a 40 at 100C, but the W-number is not possible to predict. winters as cold as -20F. 5w30 oil is thinner than 10w30 oil and therefore will not provide the same level of protection to your engine as 10w30 oil. Mixing the viscosity of oils will not have any effect on the engine. It should be avoided at all costs. Probably the worst thing you could do to an engine other than run it dry of oil. In addition, Shell Lubricants has introduced Shell Rotella ® T6 10W-30 full synthetic heavy duty engine oil, which provides the benefits of a full synthetic engine oil in the. Or this. 10w30 – NOACK volatility rating that clocks in at 7%. A mixture of two motor oils that have different viscosity and also have different weights is done by most drivers. 5 V6) so that probably explains why the later model's manuals state 5w30. 5W-25 for a car you actually care about, I wouldn't. So it’s best to just stick with one type of oil for your car. So again, adding or mixing two oils is not advisable. Jan 30, 2015. It is much better if the two oils are. Can I Mix 10w30 and 5w30? Most oils will mix perfectly, provided they have a similar synthetic. However, it may void your warranty if you tell the dealer about it. #2. At operating temperature 5w30 and 10w30 are the same and can be mixed. Mixing 10w30 and 15w40 motor oils is generally acceptable but not recommended unless it’s in an emergency. ”. 5w30 is also the thinner engine oil of the two at lower temperatures. Is It Okay to Mix 10w30 and 5w30 Motor Oil? In general, it’s considered safe to use 10w30 and 5w30 interchangeably as long as you follow the manufacturer’s oil. Yes anytime with a new small engine or really any engine you will get some silver like that in the oil but after a few changes it will go away. In a 5w30 engine, you can add 10w40 oil without seeing any major negative impact. AMSOIL 0W-30, 5W-30 and 10W-30 synthetic motor oils are ALL 30 weight oils. #9. However, there are potential risks involved. C is for compression ignition engines S is for spark ignition engines. A 10w-30 should have a 10w-30 viscosity whether it's conventional, synthetic, or blended. Conclusion . There's been talk before of owners using too heavy of a wt. r/MechanicAdvice. All engine oils have a certain temperature range, across which they provide the best performance. Good old 10w30 is as close to a universal oil as exists, it seems to do well in virtually anything. Can You Mix 10W30 And 10W40 Motor Oil? You should avoid mixing 10W30 and 10W40 motor oil whenever possible. Yes, you can mix 5w30 and 10w30 without a second thought. 1. It can be used in place of SAE 30 in compatible engines as it provides the same SAE. Here is a comparison of 5W-30 vs. For comparison’s sake, SAE 5W-30 and SAE 0W-30 will flow better at colder temperatures than SAE 10W-30, while still providing protection at higher temperatures. Furthermore, when using oil additives, make sure the additive is made. The 5w20 oil is significantly thinner than the 10w30 oil. August 15, 2012. All in all, be it 5w30 or 10w30, either is better for your vehicle. If they are of the same synthetic type, they can mix together without any issue. With what we’ve explained above, the simple answer is YES, you can mix 5w30 and 10w40 oil without bothering of any catastrophic engine damage. But you should remember that it is not recommended. The recommended viscosity for jeep vehicles is 0W20, 5W20, 5W30, or 10W30. Yes, you can mix 5W20 and 5W30 and it doesn’t bring any harm to your engine. And the 5w20 oil will make the 5w30 oil thicker and less effective in hot weather. Can You Mix SAE 30 and 5W-30. But since the concentration of whatever waxes in the 10W-XX is diluted, it would seem like the viscosity would be lower due to the 0W-XX component. Originally posted by Ken2: Mobil 1 0W-30, 5W-30, and 10W-30 are basically one formulation, and 0W-40 & 15W-50 are somewhat different formulations.