With so many different types of engine oils on the market, you might be wondering if it’s possible to mix two different viscosities, such as 10w30 and 5w30. 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. Plus, both of them have the same viscosity at temperatures. However, 10w-30 oils tend to have significantly lower volatility than 5w-30 oils. nt40lanman said: Synthetics don't flow any better in the cold than conventional oils. It can provide the user with noiseless and smooth gear and clutch operations. In cold climates, the viscosity of 10w40 is 10. 5w30 – 5w-30 counterpart registers 9. Therefore, there is no problem in mixing 10w30 and 5w30 since one will be topping up. After it is out of warranty it's your call. 1. SAE 30 is a single-grade motor oil that provides adequate lubrication to engine parts when operating under hot viscosity conditions. 5W-30 VS 10W-30. Older engines can use the SAE30, while the 10W30 is for modern engines. But you can use 0w20 motor oil for a cold start viscosity. either 50:50 or even 3:1 for a 5w27. The two oils are very similar, and they will both do a good job of lubricating your mower’s engine. . Gather your materials: You will need two containers of motor oil, one 5W30 and one 5W40. In a 5w30 engine, you can add 10w40 oil without seeing any major negative impact. 1. For a multiple viscosity oil, the first number is the viscosity when it is cold and the second number is the viscosity when the engine has reached its operating temperature. As briefly answered in the intro paragraphs above, the simple answer is YES. As the viscosity of these two oils is very close, they will mix properly. In that case, the two oils would have different cold weather viscosities but the same high-temperature viscosity. The reason being is that 5w30 and 10w30 oil have different viscosities. For example, you can mix 5W-30 oil with 10W-30 oil without problems. Remember a powerful engine like the mustang 5. Site traffic information and cookies. In simple words, you should be using 10W30 when it is hot outside and when it is cold, your go-to option for the better oil should be 5W30. 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. However, it’d be better if. It should be avoided at all costs. Additionally, the mixture of 5w30 and 10w30 could lead to various issues. 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. You will not see a immediate failure if you mix the oils, but it will cause premature wear. There are some rare cases where you have to mix them because you do not have any choice. #4. I have never ever seen an owners manual that recommendeds. Since this is used to blow snow, I doubt it gets a lot of use and probably will last a long time If you keep good oil in it and change it every few years. So (30+30+25)/3 = 28. 731. Engine oil that is not rated for use in Diesel engines will not last and will severly damage an engine. It will work great in your car in Georgia year-round. 10w30 – has a rating of around 5. 5w30 oil is lighter, and its density is less. I've been around here for a long time, but I find this to be somewhat perplexing. #4 · Apr 8, 2013 (Edited) I would not mix 2. Which Oil Is Thicker: 5W-30 or 10w30? Both oils have a similar viscosity at 100 degrees Celsius but the 5w30 grade oil will thicken less than 10w30 grade oil in a cold climate. The answer is yes. What oil should I use in my. joelukex4. Nissan automobiles should be lubricated with 5w30 or 10w30 synthetic motor oil. It’s a common question with a simple answer: yes, you can mix 5W30 and 10W30 motor oil. Can I Mix 10w-30 and 5w-30? A lot of drivers mix motor oils of similar viscosities. Can you mix 5W30 and 5w40 oil? Simply put, you can mix 5W30 and 5W40; if your engine has been running with 5W30, upgrading to 5W40 won’t be any worse, and downgrading from. Can I add 5W30 to 10W40? Yes, you can add 5w30 to 10w40. Trucks, SUVs, and other types of vehicles can be included. The concern often centers around potential engine damage, but when it comes to oils of similar viscosities, there is no need for worry. Yes, its fine. These two engine oils are very similar in viscosity; hence, they might mix perfectly in. Compared to conventional oils, synthetic oils offer superior protection for small engine vehicles. Thin liquids that flow easily, like water, have low viscosity. 10W-30 synthetic oil’s range is between -25°C/-13°F to 30°C/86°F (sometimes -30°C/-22°F to 35°C/95°F) while a 10W-40 is from -30°C/-22°F to 40°C/104°F. In warm climates, they will act very similarly. straight 30 mineral oil. Can you put 10W-30 in place of 5W-20? You can, but you’re getting into a more drastic difference in oil viscosity for both warmer and cooler. The only difference between the two oils is the low temperature point, with the 5W30 oil functioning slightly better than the 10W30 oil. Viscosity is the level of a liquid’s resistance to flow. Mahzurrah! Apr 16, 2023. 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. So, it’s better to choose the oil type wisely depending on. The answer may not be as obvious. Probably have a quart of Pennzoil in there. 0. Today’s multiple viscosity oils work with a wide range of ambient temperatures. Whether it is safe or not to mix oils of different grades depends on the engine. Can You Mix 5W30 And 10W30 Oil? There are a few things to consider when mixing 5W30 and 10W30 oil. It is not recommended. 5W-40 won't hurt, and if you really want to try it, go ahead. The 10w40 motor oil is better used in hot weather or heavy loads. However, the difference in viscosity between the two can impact engine performance, particularly in specific temperature conditions. I had a 2012 outback which used 5w-30 synthetic oil, now I have a 2015 out which uses 0w-20 synthetic oil. Germantown TN 38138. Sep 23, 2015. As a result, many consumers can. 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. If you want to come up with your own oil mixture, just check the oil number of the two oils. August 15, 2012. 7l H. Odd, I'm running a 0w30 GC / 5w20 gtx HM mix myself in one of my mowers that calls for 10w30. Please refer to your individual vehicle owner's manual for proper viscosity grade and specification of oil to use. If you can't find it, you can use 5w20, but then that must be replaced with 0w20 at the next oil change. 5w30 oil, on the other hand, is thinner and designed for use in colder temperatures and lighter engine loads. When it comes to choosing the right motor oil for your vehicle, you may come across different grades and types. However, many car drivers have been doing this act, and they seem to be okay. This is different than an oil labelled 5W30, which has a thinner viscosity when the engine is cold at 5W. It is safe to mix 5w20 and 5w30 as long as you follow some recommendations. After all, Jiffy Lube ® knows oil. Most cars that recommend 0W-20 or 5W-20 do so for fuel economy reasons and can use 5W-30 with no ill effects. at operating temperatures. Originally posted by boxcartommie22: i got this from the million mile book. This is because both oils have the same API classification (in this case, SN). valvoline or pennzoil high mileage should do fine and maybe stop the oil seepage and oil burning or for sure slow it down. SAE 30: works well in warm temperatures, and is best for older two. Of course you can. 5w30 is preferred especially in colder climates. THE 10W30 OIL & ITS BENEFITS. What You Should Know About Oil Thickness At Different Temperatures. Motor oil is a vital component of any engine, ensuring its smooth operation and longevity. DO NOT use automatic transmission fluid (ATF) - that fluid is NOT compatible with the oil that's in there now, and it may even wreck your seals. 10w30 – NOACK volatility rating that clocks in at 7%. These two oils have contrasting viscosities and are designed for completely different types of use. The second number is the hot flow. 10w30 just like 5w30 engine oil is capable of maintaining its viscosity even under high temperatures. So, we can say you can mix 10W30 with 5W30 safely and perfectly. However, if you use these motor oil, the new viscosity will be higher than the 5w30 and thinner than the 10w40. In an 07 I do no think it would be an issue at all to go 2. 2. If your oil must be topped up, then you are burning oil already, so the difference won't cause more damage than is already there. The fluid is commonly used in vehicles with gasoline engines. Yes, you can mix 5w30 and 10w40. But no it won't hurt to use 5w30. The recommended motor oil for Nissan vehicles is 5w30 and 10w30. Q. On the other hand, the 0w30 motor oil will break down faster than the 10w30 motor oil. SAE 30 - Warmer temperatures, most common oil for small engines. Generally you use sae 30 in the older flatheads but if it's OHV then they recommend that you use a multi-grade oil instead. Mixing will not change the behavior of the waxes in the 10WXX oil. The two oils have different viscosities, meaning they flow at different rates. Joined Dec 26, 2007 Messages 2,473 Location NC. Yes you're overthinking it! Use the least expensive oil you can find. The answer to this question is a bit more complicated than a simple yes or no. Note: You can also read Can I Mix 10w30 With 5w30. Both oils are formulated to protect against wear and tear on engine. Can I mix 5w20 and 10w30? It should be fine , considering the temps, and that the suggested oil viscosity is usually 5W-30, so two quarts of 5W-20 and three of 10W-30 probably come pretty close. I found no reason, period, to run a 15w40 for bearing protection, bio-diesel, or towing in the 6. Yes, I was running 10w30 in November and early december. Technically, you can mix SAE 30 oil and 10W30 oil, but it’s generally not advised to do so. Especially given that you live in Florida, 10W-30 vs 5W-30 is not an issue at all. The only difference between the two oils is the low temperature point, with the 5W-30 functioning slightly better than the 10W-30. If you drain the old oil, you are just draining what is in your oil pan; the oil is still left inside your vehicle’s. You might think this would mean that 5W-30 would flow out of your engine faster than 10W-30 when cold, which could be bad if you’re trying to start your car in sub-20-degree weather. THE 10W30 OIL & ITS BENEFITS. Engines on most outdoor power equipment operate well with 5W30 Synthetic oil. When looking at 5W-30 vs 10W-30, they both provide the same viscosity at operating temperature, as indicated by their identical “30. Sort by Oldest first. In this article, we will explore the implications of mixing these oils and whether it’s a good idea for your vehicle’s performance and longevity. You should remember that mixing various types of oils won’t necessarily improve your engine’s performance. The Society of Automotive Engineers determines the viscosity ratings of motor oil. Learn about 0W motor oil and viscosity by reviewing. That's how the oil is graded by the SAE. For instance, if you have the SAE 30 engine oil, you can mix it with SAE 40. Conclusion . F-fan - As far as home brews go, 5W-30 with SAE 30HD should be a very practical mix. If you reside in a colder region, it is always advisable to use more 5w 30 oil, which is thinner and can quickly flow through the engine in colder temperatures. However, 10w30 is a multigrade oil that performs well in hot and cold temperatures. #4 · Apr 3, 2017. It is safe to mix 5w20 and 5w30 as long as you follow some recommendations. However, you need to know the right way to do this. Every 40 weight I put in was in the 30 weight range. Many on here would say to try and clean the engine to 'free up the rings' - try to run a quart of MMO in with 1-2 fills of oil to see if it helps. Nebraska. So we're effectively down to 5W20 vs 5W30 discussion, of which there are already plenty in the archives. Mixing 5w 30 with 10w 30 is permissible as long as the ratio is appropriate, but it is not recommended by most vehicle manufacturers. As far as we can tell, Mazda engines don’t use 10w30 motor oil. 5w30 oil is lower in viscosity and there is a small chance of the car not running. In summary, what you should know is that 5w30 oils are less viscous and flow easily than 10w40 oils at both high and low temps. My manual says to use 10w-30 but the local store always has 5w-30 heavily discounted and I have been using it. Considering the most critical concerns while mixing the two oils, 5w-30 and 10w-30 are safe and compatible to mix together. I don't worry if the 10W30 and the 15W40 are the same brand either. If I was you though, I would just run the Valvoline VR1 5w-50 synthetic and not worry about trying to mix oils. Still, the safest way to do this is. Yes, you can mix 0w20 oil with 5w20 oil. In this post, we’ll also look at if it’s safe to use regular oil after synthetic oil. On my daughter's oil consuming tercel, I add 1 qt of 20-50 Castrol HM to see if thicker. But the resulting oil should still be at least a 5W. Whether it is safe or not to mix oils of different grades depends on the engine. But, we recommend you not mix or blend 10w30 and 10w40. CK-4 (CES 20086) was made specifically for that. #1 · Jul 1, 2018. Different oil producers have different standards, and it is noticeable in the oil quality. Onlinealias. You can run 5W-30 year round. Only use this chart to find an oil equivalent to the manufacturer’s recommended oil for your tractor or truck. 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. #3. #15. is 11W-34. Rotella T5 10w-30 or regular Rotella 15w-40 in all the small engines up to 35 horsepower. There isn’t a big difference between 5w30 and 10w30, but they have different viscosities. Ford said that at -20F (-28C), conventional 5W-30 took 30 seconds to pump up to the valve train, while conventional 10W-30 needed 2 minutes. The days of lubricants of the same application, type, and class fighting with each other are within reason, history. Location. If you want something thicker, you can use conventional 10W-30, which is very shear-stable and should be even thicker than synthetic 5W-30 and synthetic 0W-30 throughout the OCI. Mixing different oil. So if you want to mix 20w50 oil with a 10w30 oil or if you have to, you can mix them both up. 5W20 will flow easier in cold/low temperatures to keep your engine parts. Yes, you can mix 5w20 and 5w30 engine oils. If it was mine I'd use 10W-30. Re: Can I mix Mobil1 5W-30 with Mobil1 10W-30? (kaitsu) As an engineer I can say absolutely yes, yes you can. At best, if you mix say a 10W40 and a 0W20, you will get a 10W30 at 50/50 ratio. A 10w-30 should have a 10w-30 viscosity whether it's conventional, synthetic, or blended. They will mix perfectly. Can you mix 5W30 and 10W30 motor oil? 5w30 and 10w30 are two of the most common motor oils. I think it likes 5w30 best, but no real issues with the 10w30 in moderately cold weather. Here’s a look at 10w30 and 5w30 and how they affect your engine. But you can use the 10w30 on the diesel engine as well. These two grades of oil have very similar viscosity and additive packa. The rest either became tarnish, or combusted incompletely& formed carbon deposits on the. Well, mixing won't hurt a thing. the biggest difference you can do is plug in an oil pan heater on a timer for 3 hours before you anticipate leaving in the morning.