The second viscosity rating is how thick the oil is at operating temperatures, which here in both cases is 30, the same. SAE 30: works well in warm temperatures, and is best for older two. Now, you might be wondering if you can mix oil brands. The short answer is…yes. 10w30 Nissan. Do not, however, mix synthetic and normal oils (unless the synthetic's manufacturer specifically says it's OK). When the engine is excellent, 10w30 motor oil has a viscosity of 10w. 10w40 oil is a thicker oil than 5w30. Jun 3, 2014. You’ll want a HTHS of at least 3. It is safe to mix 5w20 and 5w30 as long as you follow some recommendations. It can be used in place of SAE 30 in compatible engines as it provides the same SAE. Quaker State. These oils share a close viscosity profile, making them compatible for blending. The blend would have to be tested to get the low-temperature viscosity rating. This enables the 5w20 motor oil to reach engine parts quicker and create less drag that reduces fuel economy. I have never ever seen an owners manual that recommendeds. 5 puts it into the VERY thin 30 weight range. 1). Every 40 weight I put in was in the 30 weight range. Yes, you can mix 5w30 and 10w30 oils. Properly dispose of used oil. 2 quarts, but no more than 4. 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. 10w30 oil type covers a significantly smaller range of temperature. Use the oil that is called for, every time. Sep 23, 2015. Besides, according to the PSC oil viscosity comparison chart, ISO 100 is equivalent. But as both are synthetic oils and work almost similarly so, you can mix them well for your car engine or for any motor. Can I mix 5w30 with 10w40? 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. Yes, you can consider using 10w30 instead of 5w30 in the summer when temperatures are higher. It is advised that 5w20, 5w30, or even 10w30 motor oil be used in some Chevrolet engines in summer. This only really matters depending on if you a sub. The answer is yes. In this post, we’ll also look at if it’s safe to use regular oil after synthetic 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. Make sure you use the same brand for both oils so that they blend properly. This is a mixture of 8 oz. However, if you use these motor oil, the new viscosity will be higher than the 5w30 and thinner than the 10w40. #4. If the oil will be in the engine during winter and you live in a place where. The answer is yes, you can mix 5W30 and 10W40 oil together. Below 40°F (4. 5w30 and 10w30 engine oils have close. It can also be more prone to oxidation. They will blend perfectly. For example, if they’re 5W-30 and 10W-30, then you can use 80% of the amount of the 5W-30 and 20% of 10W-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. This is different than an oil labelled 5W30, which has a thinner viscosity when the engine is cold at 5W. e. When buying motor oils, it is good to consider options from top brands because they are typically made with OEM-approved, premium additives. 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. 5w30 – has a rating of around 11. But some car owners would say that you should not mix 0w20 oil to 5w20 oil if your vehicle is still under warranty. 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. Location. The answer is that ANY one can be used regardless of the vehicle owners manual recommendation. The short answer is yes, you can mix 10w30 and 5w30 under certain circumstances. Engines run fine!F-fan - As far as home brews go, 5W-30 with SAE 30HD should be a very practical mix. But it may lower your gas mileage by 1-2%, will vary with car, and this loss may only be temporary. Can you mix 5W30 and 10W30 motor oil? 5w30 and 10w30 are two of the most common motor oils. Trucks, SUVs, and other types of vehicles can be included. What You Should Know About Oil Thickness At Different Temperatures. 7cst), so they are almost a 20-weight. If they originally recommended 10W-30, they you can use 5W-30 or a mixture. The comparison table between 5w30 and 10w40 is given in the below table: 5W30. The engine takes 10w30 after the rebuild. If you find it necessary to mix brands of oil, use the same viscosity grade and API service category to maintain performance. are what kill them. W represents winter and not weight. Mixing will not change the behavior of the waxes in the 10WXX oil. That is usually 100°C (212°F) when the engine is running (in an average engine). Additionally, the mixture of 5w30 and 10w30 could lead to various issues. Turf-Gard™ engine oil. These oil grades have similar characteristics, with the main difference being their cold-temperature flow properties. . 10w30, on the other. The concern often centers around potential engine damage, but when it comes to oils of similar viscosities, there is no need for worry. I use it just fine into sub zero territory (into the minus teens) in the dead of winter with no issues. 5w30 oil has a lower viscosity than 10w30, making it slightly thinner. 5w30 and 10w30 are two of the most common motor oils. So you can use 5w30 motor oil for your engine because it is recommended and suitable. 3 to 11. Location. But generally, considering versatility, the 5w30 oil is superior to 10w30 oil. The concern often centers around potential engine damage, but when it comes to oils of similar viscosities, there is no need. The same brands would mean that they are compatible in terms of their additives. However, 10w30 is a multigrade oil that performs well in hot and cold temperatures. 5W20 will flow easier in cold/low temperatures to keep your engine parts. There isn’t a big difference between 5w30 and 10w30, but they have different viscosities. As a rule of thumb, for a modern (API SM) SAE 30 I think if winter temps in your area routinely drop into the lower 20F range (or lower) you need to use 10w30 or 5w30. I've been around here for a long time, but I find this to be somewhat perplexing. #2. In the long run, a mixture of 5W20 and 5W30 engine oil can restrict oil movement, make the engine hotter, increase moving parts friction and reduce overall fuel economy. Therefore, there is no problem. However, there are some exceptions to this rule. Toyota wants their vehicles to use 0w20. Feb 5, 2014 / Mixing 10w30 with 15w40 Kubota oil #5. The other number is the weight of the oil and can’t be mixed. Mixing one quart out of six doesn't seem like enough to degrade cold flow to take a 0W to a 5W. Just remember: Always use the weight of oil that is recommended, and you will have a few issues. You won’t get a little amount of help by doing so. But in winter, it becomes difficult to run a snowblower in ice with 10w30. Before mixing these you definitely should know that these are the oils that can’t be mixed. i. . Plus, both of them have the same viscosity at temperatures. 5W30 oils are easier to move in cold starts, on the other hand, 10W30 oils lubricate the engine. Mostly 10w30 and 10w40 but the Rislone is more like a 20 weight. 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 temperature. More specifically, 0W30 oil is thinner than 5W30 at low temperatures. In warmer regions, the thickness of 10W30 will make it easier to flow. Whether it is safe or not to mix oils of different grades depends on the engine. Mixing the viscosity of oils will not have any effect on the engine. Manufacturers designed these oils to protect the engine. J. (the first number is cold viscosity and the second number is hot viscosity -- bigger numbers. We would like to show you a description here but the site won’t allow us. Mixing 10W30 and 10W40 Motor Oils. Add to that, being synthetic is an extra margin of safety. Dec 24, 2011. . Although 5w30 is less dense, their viscosity is similar, and their combination is perfect. 5w30 oil is thinner than 10w30 oil because of its lower viscosity. There are some rare cases where you have to mix them because you do not have any choice. At operating temperature 5w30 and 10w30 are the same and can be mixed. So whatever percentage of SAE 30 added is going to jack up the average above even what the 10W. 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. If you search online about mixing oils, you will get a lot of people telling you it is okay. 5w-30 oil is thinner than 10w-30 oil, so. For example: Valvoline Maxlife Synthetic. But you can use the 10w30 on the diesel engine as well. I have never ever seen an owners manual that recommendeds. If you can't find it, you can use 5w20, but then that must be replaced with 0w20 at the next oil change. #3. Thanks to their close viscosity, mixing the two oils will have no damaging effect on the engine. 10W30 is preferred in warmer climates, but you should. 3. at operating temperatures. It will not affect the engine’s performance or efficiency. Temperature Range There are several critical aspects that readily depend on the. and how it doesn't agree with these motors due to very tight clearances. 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. These specifications are to be used as guidelines only. Mixing the viscosity of oil has no effect on the engine. Maybe it doesn't have enough oil. 6. St. 10w-30 and 15w-50 4 qt's of 10w 30 1 qt 15w-50 so 10x4=40 plus 15=55 divided by 5=11W 30x4=120 plus 50=170 divided by 5=34 so your new oil wt. For equipment operated in hot temperatures, Vanguard 15W50 Synthetic oil provides the best protection. Title: Layout 1. Well, here’s the deal, you can use a 5w30 in both hot and cold ambiance, but a 10w30 is more suitable for hot weather. BMW has done the proper testing for the car so I would think that they tested 5w-30 in extreme heat conditions before clearing it for use. When comparing 5w20 vs. I would definitely use SS 5w30 over sae 30 in a snowblower. I'd buy all the 10W-30 I could, after getting the 5W-20. Can You Mix 5w30 and 10w30 Oil? (Expert Opinion) How Long Can I Run My Car With Too Much Oil? Car Brake System Parts Explained in Detail; Best Car Batteries. Feb 15, 2012. 5w30 and 5w40 motor oils have the number 5 which is then followed by W. Title: Layout 1. The only difference between the two oils is the low temperature point, with the 5W-30 functioning slightly better than the 10W-30. 10w30 – has a rating of around 5. You'll find most SAE 30's run 11 to 12 cSt @ 100C. However, it is advised against because of multiple reasons. However, 0w30 is already noticeably thinner at 100F compared to 5w30 so even if your engine sees 10-20F often 0w30 will be beneficial in my opinion. You can even use Pennzoil or Quaker State synthetics. of gas) to 50:1 (2. They will mix perfectly. A lot of car drivers are saying that the act did nothing bad or harmful to their engines. Nov 21, 2011. . Properly dispose of used oil. However, remember that you will not have a better performance, and this mixing is not recommended. But he has some 10W-30 in his garage, so he uses it to change the oil. THE 10W30 OIL & ITS BENEFITS. YES, as stated in the initial paragraphs above, is the straightforward answer. At no cost can you mix 5w30 and 10w30. However, it may void your warranty if you tell the dealer about it. whereas 10W30 oils are more suitable for cars that run throughout the year in higher temperatures. 10w30 – NOACK volatility rating that clocks in at 7%. It flows more easily at low temperatures. You cannot mix 0W40 and 10W40 and get 5W40. For example, you can use 5W30, and 10W30 as SAE 30 motor oil alternatives. Q. Without the right oil additives, you can wear the lobes off the camshaft. Get outstanding performance for your four-cycle gasoline engines. . But you know which oil type will work better. February 17, 2022. While starting your engine, 5w40 will have a lower viscosity other than 15w40. Can you mix 5W30 and 10W30 motor oil? 5w30 and 10w30 are two of the most common motor oils. These two oils have contrasting viscosities and are designed for completely different types of use. The car currently has castrol edge 5w-30 and the only oil I can find locally is castrol edge 5w-40. Additionally, If your lawnmower manual calls for. So whatever percentage of SAE 30 added is going to jack up the average above even what the 10W-30's normally run. However, it is not recommended to do so. It is best to use the same manufacturer and stay consistent with it. AMSOIL 0W-30, 5W-30 and 10W-30 synthetic motor oils are ALL 30 weight oils. 5W-25 for a car you actually care about, I wouldn't. So, it is best for vehicles running in cold climates to use the 5W30 since it is thinner than the 10w30. When you mix motor oils, you deprive your engine of enjoying the full benefits both oils would have delivered if used separately. Thanks to their close viscosity, mixing the two oils will have no damaging effect on the engine. The following number is the viscosity, or thickness, of the motor oil at low temperatures. Mixing two multigrade oils, such as 5W30 and 10W40, is ok. Both 10W-30 and 5W30 have the same viscosity at 100°C (212°F), it is the operating temperature of an average engine. If you want to mix, consider mixing straight grade oils. 5w-30. Say we add a quart of 5w30 to 2 quarts of straight 30 weight. The blending of both oils won’t do the engine any harm, at least not immediately. Well, mixing won't hurt a thing. Yes, you can mix 20w50 oil with 10w30 oil. Tractionless1 said: I use 5w-20, that's what he manual recommends. The 5w30 motor oil is synthetic, and it has a viscosity of five (5) in low temperatures and thirty (30) in high temperatures.