These two oils have different viscosities,. Whereas 10w30 is a high-grade oil and has a higher density. 5 of 5-30 if it was newer. However, there’s a higher chance that their blending will fail at the -35°C test. Compatibility of 5w30 and 10w30. NJ. Apr 1, 2003. This is because a 10w30 requires less viscosity inhibitors to behave like a 30w at opertating temp compared to a. SAE 10W-30 motor oil is one of the low-temperature multi-grade oils commonly recommended by manufacturers, along with 15W-40, 5W-30, and 0W-20. 10w-30 and beyond are still labeled conventional. For example: Valvoline Maxlife Synthetic. It’s worth noting that using a different oil on your car won’t damage the engine; notwithstanding, it may trigger certain unusual signs depending on your car model. Welcome !! That should be the 3. 0. 10w30, on the other hand, has different properties from the 5w30. The answer is yes. The short answer is yes, you can mix 10w30 and 5w30 under certain circumstances. The engine oil will flow slower than 5w30 when it is cold. Many car owners have been unsure if a 15w40 oil and a 10w30 oil mixture is the best option for their vehicles. The answer is yes; you can mix 5w20 and 10w30 oil. Avoid spilling during mixing the oil as it can make a burning scent. There are pros and cons of the engine fluid becoming thicker and thinner. We would like to show you a description here but the site won’t allow us. Common grades include 0w20, 5w30, 10w30, and 15w40. As far as a 5w30 versus a 10w30 I think it has to do. After that will be either PP 5W20 or M1 5W20. In the case of 10W30 oils, the temperature range is -25°C/-13°F to 30°C/86°F. However, doing so is not ideal if you want to reap the benefits of what the motor oil brand intends. and Castrol GTX 10W-30 dino went out and bought two quarts Valvoline Max Life syn-blend 5W-30. (Explained) Can I mix 5w30 with 10w30? Well, many drivers often think it is good to pour 5w30 oil with 10w30 oil. 5w30 is a viscous fluid with an extensive range of temperature within -35 to 35 degrees celsius. 3 to 11. Messages. #3. Cons: I only see ( " 5 "w -30 ) available at my local auto shop nowadays, never the 10w. Compatibility of 5w30 and 10w30. The 2008 to 2010 engines highly recommend staying with 5W30 but 10W30 isn't prohibited. 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. such as mixing 5w20 and 5w30, using 10w30 instead of 5w30, and mixing 5w30 with 5w40. 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. Yes, you can mix 5W-30 and 10W-30 motor oils without causing significant issues for your engine. The best scenario - run 10w30 during warm weather, 5w30 during cold weather. At operating temperatures, both oils will have the same viscosity (30) and will flow and protect identically. However, if you do use 10w30 in a 5w20 engine, it may lead to several negative effects on your car –. Example 5w20 may have a cSt of 8. But 10w40 oils have an added. Pennzoil Platinum Dexos1 Gen2 5W30 satisfies all my requirements. Let’s find out more about Engine Oil 10w30 vs 5w30. 5w30 oil is thinner than 10w30 oil because of its lower viscosity. The lower viscosity makes 5w30 a better choice in cold weather. farking jiffy lube. 5 + 10. Can You Mix 5w-30 and 10w-30? – Safety Aspects. In cold climates, the viscosity of 5w30 is 5. Run 93 octane. Engine oil has a higher sheer rating than hydraulic oil. The two motor oils will stay the same oil. Location. roy1 Discussion starter. The Society of Automotive Engineers determines the viscosity ratings of motor oil. Meanwhile, the SAE30 sports an average thickness, whereas the 10w30 only tends to get thicker with the temperature flow. Ignition – Since 10w20 oil is thicker and combusts at a higher temperature of -18° to 30° Celsius, it may make ignition harder, especially in lower temperatures. 6,881. Sort by Oldest first. It is possible to combine 5W-30 and 10W-30 engine oil, but it isn’t necessarily the best option. C. The short answer is, yes, you can technically use 10W40 instead of 10W30. The 2001 Silverado owners manual says to run the 5w30 ("preferred"), 0w30, or 10w30, and not to use anything else like 20w50. It is not recommended that you mix 5W-30 and 10W-30 oil, given that they are formulated to be more effective at different temperatures. It’s a common question with a simple answer: yes, you can mix 5W30 and 10W30 motor oil. 126. As a result, combining the two oils in your engine may be okay. Mixing different oil weights can cause your car to run less efficiently. For equipment operated in hot temperatures, Vanguard 15W50 Synthetic oil provides the best protection. They are both synthetic oils and have nearly the same viscosity. However, it is not recommended to do so. But I have always felt that 10w30 will flow just as fast as 5w30 in the hot weather, especially since their. The short answer to this is no, 10W-30 oil is not the same as SAE 30. My E430 sump is currently have 6 qts M1 0W20 and 2. Is it safe to mix different types of engine oils? Mixing. Many have reported that they have not experienced any harm or harmful effects that the mixture did. It is not bad to put 10w30 in a 5w30. If you are going to move up in weight/viscosity. J. I have an hour meter on my mower, and it shows that I use it 60 to 65 hours a year. Can I mix 5W-30 and 10W-30 oil? Mixing different types of oil is generally not recommended, as it can negatively impact engine performance and potentially cause damage. Yes, you can use 5w20 oil on Toyota instead of 5w30. Jan 30, 2015. 5w30 is used for light-duty engines while 10w30 is used for engines which carry heavier loads. It will work great in your car in Georgia year-round. In 2005, they changed their recommendations again (but only for 2005 and newer engines) to a 5W-20 oil. The engine oil will flow slower than 5w30 when it is cold. As far as 0w20 versus 0w30, it will be basically the same weight cold, at startup. In warm climates, they will act very similarly. The main difference between them is viscosity, with 5W30 being thinner and flowing more easily at low temperatures. 9-11. Can you mix 5w30 and 10w30? No, you can’t get any desired result by mixing both oils because both oils come in different grades. Have an oil change coming up. In this post, we’ll also look at if it’s safe to use regular oil after synthetic oil. The 5w30 should be fine,but if you insist on using something a tad thicker use the 10w30. You can mix 5W-30 and 10W-30 or combine a lighter-weight oil with a heavier one, in general. Basic answer is, if your still under warranty, you better use 12W-30 or vyou will void the warranty. It requires a combination and mixture of regular oil and unleaded gas with a ratio of 16:1 gas to oil for the first month or first 500Km of riding, and 20:1 once the engine has been broken in. Can I Use 10w30 Instead of 5w30 in Summer. Yes, mixing 5W30 with 10W30 motor oil can affect your engine. If you want to come up with your own oil mixture, just check the oil number of the two oils. Low-horsepower engines often utilize 10w40 motor oil, which is designed to flow smoothly at low temperatures. Can You Mix 5W30 And 10W30 Most engine oils will have little trouble mixing with one another, as long as they’re of a similar type. TIA . A higher viscosity oil, such as 10w30, will flow. In warm climates, they will act very similarly. . That’s why it’s often used in cold climates or in engines that are often started in cold weather. New Jersey. 10W-30 Engine Oil to find out which one is best for you. Given that a 0w-40 or a 5w-40 likely has ACEA ratings, and that those ACEA ratings aren't going to be A1/B1 A5/B5, I wonder about mixing them with an ILSAC lube. However, it is advised against because of multiple reasons. When comparing 5w20 vs. The engine is the 1999 5. In fact, because of its wider viscosity range and steeper viscosity curve, 5W30 likely does not thin out as much as 10W30 when ABOVE normal operating. The viscosity of these two oils is very close; hence, they might mix perfectly inside the engine; so to say, it is okay to mix 5W30 with 10W30. Is it Safe to Mix 10W30 and 5W30 Motor Oils? Compatibility of Oils. In my neck of the woods it's usually right in between both and I've used both, one or the other, for years when changing oil on these vehicles. Aug 24, 2013. What ever you use the oil should be changed at regular intervals. In addition, the different viscosities can cause the oil to sludge, clogging up your. Engines run fine!In warmer regions, the thickness of 10W30 will make it easier to flow. Therefore, you can mix 5W30 with 10W30 with no ill effects whatsoever. Jason. We do know that the additive package of M1 5w-30 SN/GF-5 is probably going to be the same. These two engine oils are very similar in viscosity; hence, they might mix perfectly in. I'm not one that usually buys an equipment manufacturer's own brand (I don't like the Briggs oil, way over priced) but the Kohler oil I found works best. Mixing a 10W30 oil and a 10W40 oil won’t be much of a big deal if the engine works fine with both types of oils. To summarize, when looking at 5W-20 vs 5W-30, their viscosities when cold will be the same, but the 5W-30 will be a little thicker at operating temperatures. It also calls for HTO additive. By industry agreement/specification, all brands of oils will work fine together. Castrol, Valvoline, Pennzoil "conventionals" are all labeled "synthetic blend" in 5w-20 and 5w-30. The hot viscosity (100 degrees C) for the 0W20 is between 5. The 5w40 motor oil indicates the weight and the viscosity of the engine. Mixing the viscosity of oils will not have any effect on the engine. A 5W-30 oil is fine, but a 10W-30 oil will work just as well. But for your use, you could run the 30 weight this summer, and switch back to the multigrade for cooler weather. Mostly 10w30 and 10w40 but the Rislone is more like a 20 weight. My manual says to use 10w-30 but the local store always has 5w-30 heavily discounted and I have been using it. What's strange is that 5W40 is recommended instead of 5W30 or 0W30. In fact, it’s often recommended to do so. How does an oil shear its cold rating? 10w30 would either shear down to a 10w30 with a slightly lower cSt or shear down to either a 5w20 or SAE 20. While they are both multi-grade oils that protect and lubricate the engine, they have varying properties. In cold climates, the viscosity of 10w40 is 10. G. Apr 19, 2010. When it comes to choosing the right motor oil for your vehicle, you may come across. If you desperately need to top off a quart, yes. 5 gt really doesn't change it much as you can check in the shell viscosity mixer as its only changing it by 1/5 anyway. Now, you might be wondering if you can mix oil brands. If you have the 100C cSt viscosity numbers we can calculate it better. 2,449. Yes, it won’t hurt their car engines, but it’s not a recommended practice. Apr 20, 2004. Yes, you can mix 20w50 oil with 10w30 oil. Q. Mixing 10w30 and 5w30 can be done safely in certain situations. Can You Mix SAE 30 and 5W-30. 10W40. It’s not necessarily ideal, but doing so won’t cause harm to your engine. If you need to top up your oil in an emergency, it’s best to stick to oil from the same brand to reduce any potential engine damage. Both are the same viscosity at operating temperatures. Nissan does not recommend these two oils, however you can give them a shot if you want. The difference between 10W30 multi – grade and straight grade oil is that it has been formulated to provide a 10W viscosity at very low temperatures to aid in cold-cranking in heavy engines. The hot viscosity, the 30 grade, will stay the same if you mix them. 5w30 and 10w30 engine oils have close viscosity, and thus there is no harm in mixing them. These two oils have contrasting viscosities and are designed for completely different types of use. Or 10w30 into 5w20. Because the viscosity of 5w30 and 10w30 engine oils is about the same, mixing them is not dangerous. So you can use 5w30 motor oil for your engine because it is recommended and suitable. Yes, it is perfectly safe for you to mix 5W-30 and 10W-30 engine oils. The 5w30 oil will thin out the 5w20 oil and won’t flow as well in cold weather. Both oils. Mahzurrah! Apr 16, 2023. Mixing 5W-30 and 5W-20: The Verdict. 3, Ur 5w30 might be Cst 10. #1 · Jul 1, 2018. I believe the 6. As a result, while mixing the two is technically possible, it is not advised. 5w30 provides better lubrication as a result of its superior flowability; however, the greater thickness of 10w30 grants it a better sealing capability. Hearing just a slight knocking on start up till it warms up. As such, mixing synthetic and conventional oil is okay sometimes if you don’t do it frequently, but otherwise, frequently mixing together can affect their performance. 10W30 should only be used if your ambient temperatures routinely exceed 100-110F for the duration of the oil lifespan. It’s not necessarily ideal, but doing so won’t cause harm to your engine. Q. Of course you can. Mixing 10W30 and 5W30 won’t result. On 8/14/2012 at 5:44 PM, Steptronic said: Since we do not have much "temperature variations", practically it should be okay to mix both. As a result, combining the two oils in your engine may be okay. The short answer is yes, but only under certain circumstances. Hi folks, I just found out that a few weeks ago I accidentally topped off my 2009 V6 engine with 10W30 oil instead of 5W20 oil. I remember when GM and all the other major carmakers made the switch to recommending 5w30, they claimed it was also beneficial in the summertime since the oil would flow faster to the top end of the engine. If they originally recommended 10W-30, they you can use 5W-30 or a mixture. In warm climates there is no need to run 5w30 at all. I think it likes 5w30 best, but no real issues with the 10w30 in moderately cold weather. Location. Location. Since the thinner 5w20 oil lower combustion range of -30° to 35° Celsius. I didn't notice until it was two late (Autozone didn't have the oils stocked correctly), but I just mixed two 5w20s with three 10w30s. I mix 5w30 & 10w30 in my GMC 6. Read on for a guide on how you can mix 10w30 and 5w30 oil. 5w30 oil, on the other hand, is thinner and designed for use in colder temperatures and lighter engine loads. 5W-30 is going to have the same viscosity as 10W-30 when the oil is hot. Synthetic 5W-30 can be used in all temperatures. I may run 10w30 in my Tacoma when the next interval is due. I do the same thing and add the oils to OPE or top off my engines if needed between OCI's. 5w30 is also the thinner engine oil of the two at lower temperatures. If you drive hard, change the oil & filter more often. Whether it is safe or not to mix oils of different grades depends on the engine. Jun 24, 2018. On the other hand, it has a hot viscosity grade of 20.