5%. However, it is advised against because of multiple reasons. 5w30 oil is thinner than 10w30 oil and therefore will not provide the same level of protection to your engine as 10w30 oil. After that will be either PP 5W20 or M1 5W20. 10W-30 Engine Oil to find out which one is best for you. The add packs are pretty much identical, the base oil and VI content would be the biggest difference. Answer: Absolutely not. I would just use the 10w30. These two oils are a perfect blend with almost identical viscosity. 3 to 11. However, the 10W – 30 oil will be thicker when it is cold. Therefore, the 5w40 motor is not thick if it has a high viscosity. It doesn’t matter if 10w30 and 5w30 are mixed because one of them will be topping up. The advantage of a 0w30 motor oil is that the number zero is far from thirty (30) than ten (10). It's good to know that the HTHS of a quality straight 30 is 3. Yes, you can mix 5w30 and 10w30 without a second thought. You can mix 5w30 and 10w30 oil together. Sep 9, 2017. We’ve established that 5w30 is suitable for cold regions. It is best to use the same manufacturer and stay consistent with it. Using two different oil weights in the same engine is perfectly acceptable in any of these situations. At no cost can you mix 5w30 and 10w30. Starting the engine with warmed up oil is THE way to do it, and makes mixing totally not needed. I'm about to do a super frankenblend in my moms car to use up my leftovers. This can be beneficial in higher heat conditions or for engines that operate at higher temperatures. The engine takes 10w30 after the rebuild. Cons: I only see ( " 5 "w -30 ) available at my local auto shop nowadays, never the 10w. To better understand, in a 5W-30 oil, the "W" stands for winter performance. But, we recommend you not mix or blend 10w30 and 10w40. Reduced fuel efficiency: Thicker oils can create more resistance in the engine, leading to decreased fuel economy. In Australia you can use 0W20, 5W30, 10W30 and 15W40 in that engine. If you put together these oils, it will boost up oil pressure when cornering at high revs. SAE 30 Oil and Its Benefits. Refer to your owner’s manual for the recommended motor oil for your vehicle. Posts: 10,873 Upvotes: 1,731 Received 703 Upvotes on 625 Posts I don't know the specifics but I don't think for lawnmower application it wll cause any harm. When you’re next able to, completely drain your oil and replace it with. 5 then if U check the definition of oil by viscosity, U will see that 9. Oil should be changed after the first 20-30 hours of operation and every 100 hours of run time thereafter. 9. The resulting mixture will be a blend, meaning that it may not protect your engine as well as 5w30 or 10w30 would. However, they shouldn’t be. But I suggest checking the oil pressure with a real oil pressure gauge. I'd buy all the 10W-30 I could, after getting the 5W-20. However, many car drivers have been doing this act, and they seem to be okay. As 5W30 is a thin oil, mixing it with 10W40 will give you a much thinner oil. A long time ago the guys at Redline recommended that I make a similar 50% mix. Yes, you can mix 5W-30 and 10W-30 motor oils without causing significant issues for your engine. As a result, many consumers can. On my daughter's oil consuming tercel, I add 1 qt of 20-50 Castrol HM to see if thicker. Mixed engine oil is better than low, dirty, or no oil. 5W30 Oil. However, you should know that 10W30 has more density than 5W30. Standing in the middle of this comparison, 5W30 has a higher viscosity than 0W30 but lower than 10W30. (drained 5w20 will be used at a later date in the Mazda) My reason for doing this is 1. So, we can say you can mix 10W30 with 5W30 safely and perfectly. For instance, SAE 10W-30 oil would act like an SAE 10 at cold temperatures and like an SAE 30 at 100 °C (212 °F). No problem mixing. In layman terms, your engine will be able to handle higher. Yes, it is perfectly safe for you to mix 5W-30 and 10W-30 engine oils. Tire;. However, doing so is not ideal if you want to reap the benefits of what the motor oil brand intends. Daily Drives: -2003 Toyota Tacoma PreRunner XtraCab, 2. Yes, you can use 10w30 instead of 5w30 engine oil. The 10w30 oil is. 4°C); and down to -10°F (-23°C), use 10W-30; synthetic 5W-30 can be used in all temperatures. 5w30 oil is thinner than 10w30 oil because of its lower viscosity. I asked one of their engineers if this would make a 15w40, and he said I would definitely get a 40-weight at operating temperature, but he said the. On the other hand, 10W30 oils have viscosity grades of 10W at lower temperatures and 30 at higher temperatures. #1 · Jul 1, 2018. 9 When used 10w-30 tests below 9. Mixing 5W30 and 10W30 is possible. 25 qts of 0-20 and 2. On the other hand, if you add 5w30 oil to a 10w40 engine, you’re taking a bigger risk. 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. #15. The 5w30 has more viscosity index improvers vs the 10w30 so technically the 10w30 would have more oil that lubricates the engine. and Castrol GTX 10W-30 dino went out and bought two quarts Valvoline Max Life syn-blend 5W-30. 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. At $3. Is it Safe to Mix 10W30 and 5W30 Motor Oils? Compatibility of Oils. Yes, you can mix 5w30 and 10w30 oil. They are both multi-grade oils and are compatible with each other. Feb 2, 2006. There are a few potential downsides to mixing 10w30 and 5w30 oils: The resulting oil viscosity may be too thin or too thick for your engine. Jan 7, 2021. Mixing different weights is bad because engines are optimized to run on one or another so mixing 5w20 with 10w40 means half that oil is either too. Thanks to their close viscosity, mixing the two oils will have no damaging effect on the engine. Their oil for whatever reason seems to run best in these Command V-Twins. If the deal is really, REALLY good, the I'd also buy all the 10W-40 I could stash/stand having - DS oils are really good in all grades, and. This fuel is economical. even when i ask them. In most cases, you can always use the 10w30 oil, but be sure it has the appropriate weight for your vehicle. 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. Therefore, there is no problem in mixing 10w30 and 5w30 since one will be topping up. The only difference between the two oils is the low temperature point, with the 5W-30 functioning slightly better than the 10W-30. The 5w40 motor oil indicates the weight and the viscosity of the engine. Nov 27, 2010. As a car driver, you must know that motor oil is used as a lubricant. Mixing 5w 30 with 10w 30 is permissible as long as the ratio is appropriate, but it is not recommended by most vehicle manufacturers. It is recommended for use at -13°F up to 95°F / -25°C up to +35°C (outside temperature). #6. You also can run a mix of 10w30 with one or two quarts 10w40 for an in-between grade. The “W” stands for winter, while the numbers in both ratings represent the oil’s viscosity. This oil is also more readily available in most auto parts stores. The blend would have to be tested to get the low-temperature viscosity rating. Straight out of the your 2004 owner's manual; note the viscosity chart, for consistently hotter climates they also list 10W30 (but 5W30 preferred): Apr 4, 2020. Yes. Both oils have different viscosities and characteristics, and combining them can alter the oil’s protective properties and reduce its effectiveness. In addition, the different viscosities can cause the oil to sludge, clogging up your. DS 30-weights are very thin (9. Yes, you can mix oil brands. 0 or 6. Potential Consequences of Mixing 5W20 and 5W30. Stick with the 5w-30 as your engine is used to it and it is what the car requires. Each oil weight gets designed for specific weather conditions and driving styles. 5w30 – has a rating of around 11. Engine oil has a higher sheer rating than hydraulic oil. Like this, the 10w30 will have a lower burn off rate (NOACK) than a 5w30 in a same brand and a 10w30 will typically be a little more shear stable than a 5w30 because it needs fewer viscosity modifiers in the mix. 7. If the temperature is above freezing, you can also use. Yes, you can mix oil brands. In cold climates, the viscosity of 5w30 is 5. 9-11. Both oils are suitable for regular use in most day-to-day driving situations and vehicles, but let’s look at the pros and cons of each type. 5W30 and 10W30 are multigrade oil types designed to reduce friction and extend engine life. 1qts. 10w30 oil is thicker and designed for use in higher temperatures and heavier engine loads. Don't mix oil, just use the recommended 5W20. These two oils only have a difference of five points on the scale, so mixing can be done successfully. In warm climates there is no need to run 5w30 at all. 4 FAQs On 5W30 Vs 10W30. ; Mixing 10w30. Of course you can. SP, SN (5W-20, SAE 5W-30, SAE 10W-30, SAE 10W-40, SAE 25W-60*) API: SL, SJ (SAE 25W-60*) ILSAC: GF-6 (SAE 5W-20, SAE 5W-30, SAE 10W-30) Specifications may vary by viscosity grade. Can I Mix 10W40 and 5W30? Mixing different oil weights can cause damage to your engine sometimes. What Happens If You Mix 5W20 With 5W30? Nothing significant will happen if you mix 5W20 with 5W30. 5W-40 may flow a bit better than 10W-30 in freezing temperatures, but at 40C their kinematic viscosity is close. Each oil weight gets designed for specific weather conditions and driving styles. The engine runs great. #3. Plus, both of them have the same viscosity at temperatures. As a result, you have the option of mixing the two oils. The answer is yes; you can mix 10w30 and 10w40 oil. When you add 10W30 to a 5W20 engine, the 10W30 separates and does not mix well. Resources Can I Mix 0w30 and 5w30 Oil? To answer, let us first know and define both oils. If you want to mix, consider mixing straight grade oils. The “W” stands for winter, and it’s a measure of the oil’s flow at 0 degrees Fahrenheit (-17. I may run 10w30 in my Tacoma when the next interval is due. 9,808. Can I Use 10w30 Instead of 5w30 in Summer. Florida. But for the guide, you can use 5w40 motor oil in starting your engine in low temperatures. They are both high-quality, synthetic oil that provides excellent protection for your engine. In fact. High mileage oil works in a lot of cases where seals are the cause of the oil loss. My 2GR's run 30 and 40 grades. 7, you can run either 5W20 or 5w30. Yes, it won’t hurt their car engines, but it’s not a recommended practice. Both oils are formulated to protect against wear and tear on engine. 8l which used 10w-30 to low tension rings so it would get better gas mileage but at a sacrifice. I like Royal Purple 10w-30. But it’s not necessarily ideal. The short answer is: Yes, you can mix the two oils. Yes, they can be mixed without problem. 10-25-2013, 06:11 PM. Sometimes thicker oil is even recommended in higher mileage engines, although I believe the jury is still out on it. You have some 5w20 in your fuel tank, but you are. . Grade - Vis 40C - Vis 100 C 10W30 - 72 - 10 5W30 - 66 - 11 For a full synthetic Castrol Edge you get 5W30 - 72 - 12 The GF-5 oil are energy conserving, so a HTHS of between 2. Here is a summary of their key differences: Viscosity. Yes, you can mix 5W20 and 5W30 engine oil as it won’t hurt the engine immediately. There are some momentous scenarios where the instantaneous solution is the mix of 5w-30 and 10w-30, and those are: In extreme weather conditions, the mix of 5w-30 and 10w-30 provides a wide. So whatever percentage of SAE 30 added is going to jack up the average above even what the 10W. #3. Mixing the two oils together can cause the oil to break down and lose its ability to lubricate and protect your engine. So, due to viscosity, 5w20 is a thinner oil during operating temperatures, whereas 5w30 is thicker during. However, 5w30 flows much better than 10w30 during cold starts. Read on for a guide on how you can mix 10w30 and 5w30 oil. 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. Unless your 5W-30 shears badly, the 10W-30 won't help much at all. Q. Example 5w20 may have a cSt of 8. 10w30 just like 5w30 engine oil is capable of maintaining its viscosity even under high temperatures. 5w30 can be used in temperatures ranging from high to low. These two engine oils are very similar in viscosity; hence, they might mix perfectly in. Therefore, we can assure you that combining them is safe and won’t result in any significant engine issues. Some drivers have alleged that they poured in 10W30. The 0w30 motor oil is a particular type of motor oil because of its low viscosity, and it can also be a replacement for 5w30 or 10w30 motor oil. However, the former has a faster rate of thinning compared to the latter when temperatures increase. There is no need to mix two Mobil 1 viscosity grades when one will do; however, we see no problem mixing different SAE grades of Mobil 1 Tri-Synthetic series motor oils. 2.