The engine will not work correctly, and if you use the mixture for a long time, the engine will be significantly damaged. 5W-25 for a car you actually care about, I wouldn't. 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. 5 then if U check the definition of oil by viscosity, U will see that 9. Starting the engine with warmed up oil is THE way to do it, and makes mixing totally not needed. #3. The protection offered by 10w30. I would definitely use SS 5w30 over sae 30 in a snowblower. You'll get something around a 10w40, perhaps a thin 10w40, if you mix them 50/50. Flow traits and viscosity directly vary with the temperature. Hi All. whereas 10W30 oils are more suitable for cars that run throughout the year in higher temperatures. Whether you’re topping your 5W30 engine with 5W20 oil. 275 posts · Joined 2016. Therefore, you can mix 5W30 with 10W30 with no ill effects whatsoever. It is much better if the two oils are. On my daughter's oil consuming tercel, I add 1 qt of 20-50 Castrol HM to see if thicker. However, 10w-30 oils tend to have significantly lower volatility than 5w-30 oils. One year, I had some 0W30, and I used that. More specifically, 0W30 oil is thinner than 5W30 at low temperatures. 5w30 is less viscous, so it can reach even the parts of the engine that are hard to reach for lubrication. Can I mix 5W30 and 10W30 oil? Yes, you can mix 5W30 and 10W30 oil, but it’s not recommended. I'd probably stick to Royal. C. Aug 24, 2013. The engine oil will flow slower than 5w30 when it is cold. The fluid is commonly used in vehicles with gasoline engines. They will blend perfectly. 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. Mixing the two oils together can cause the oil to break down and lose its ability to lubricate and protect your engine. 5W-30 is multi-grade motor oil, whereas SAE 30 is a single grade. Mixing one quart out of six doesn't seem like enough to degrade cold flow to take a 0W to a 5W. However, you need to know the right way to do this. straight 30 mineral oil. I had some 10W40 Valvoline that I used in an oil change. It may be a 15W or 20W. So, due to viscosity, 5w20 is a thinner oil during operating temperatures, whereas 5w30 is thicker during. 10w30 is for the summer and spring seasons. Stick with M1 5w30 High Mileage, which is. -Use SAE 30 in warmer temperatures of 40° F and higher (5° C and higher) -Use SAE 10W-30 for a varying temperature range of 0 to 100° F (-18 to 38° C), this. Using two different oil weights in the same engine is perfectly acceptable in any of these situations. Oil should be changed after the first 20-30 hours of operation and every 100 hours of run time thereafter. If your winter temps rarely drop below 32F, modern SAE 30 is a viable year-round oil. When looking for SAE 30 oil replacements, you should ensure that the equivalent has the same flow rate as SAE 30 at a normal operating temperature. The 5W-30's are in the 10's. But, we recommend you not mix or blend 10w30 and 10w40. There are no significant damages or problems that you will have to deal with. In fact, the viscosity difference between 10W30 and 5W30 is essentially neglectable. Learn more about recycling used oil at. 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. For instance, if you have the SAE 30 engine oil, you can mix it. 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. Mixing SAE 30 and 10w30 is a terrible idea and might have you counting losses. It improves fuel efficiency. So, can you mix. You can find these ratings on the API oil donut on the back of the bottle/ jug. The answer is yes. However, many car drivers have been doing this act, and they seem to be okay. Personnally, I'd use straight 5w30 in the winter in Ohio. Although 5w30 is less dense, their viscosity is similar, and their combination is perfect. There is no way to know exactly what the final viscosity is though, short of testing. But to explain further, the. #4. 1). It will not hurt you machine at all and this time of year it might be a little better for it, cold weather and all. Therefore, they will flow in the same manner. However, 10w-30 oils tend to have significantly lower volatility than 5w-30 oils. Pour the 5W30 into a mixing container: Place a clean container on an even surface and carefully pour the entire bottle of 5W30 oil into it. The 10W30 oil – While still quite “fluid”, this oil is a little bit thicker at low temperatures than the 5W30 oil, making the process of starting your engine a little bit harder. They are both multi-grade oils and are compatible with each other. So you can use 5w30 motor oil for your engine because it is recommended and suitable. When to Use 10w30 vs 5w30. Can you mix 5W-30 with 10W-30? In general, it is not recommended to mix 5W-30 and 10W-30 motor oils. I have an hour meter on my mower, and it shows that I use it 60 to 65 hours a year. The other number is the weight of the oil and can’t be mixed. If you search online about mixing oils, you will get a lot of people telling you it is okay. As for oil viscosities, mixing 10W30 and. Title: Layout 1. It gets really interesting when adding multiweight to straight weight. Can You Mix 5W30 And 10W30. But there is a difference in the density of both of these oils. #8. Temperature Range There are several critical aspects that readily depend on the. However, 10w30 is a multigrade oil that performs well in hot and cold temperatures. Right now I have the Castrol 5w20/5w30 mix in during colder weather and I expect that it just makes a thin 5w30 with no additive clash due to the common Castrol-ness. No sense wasting good oil. You are not allowed to mix 5w30 with sae30 because both engine oil has different viscosity grading. 5w30 oil, on the other hand, is thinner and designed for use in colder temperatures and lighter engine loads. The 10W30 motor oil numbers are the viscosity at cold and hot operating temperatures. I would recommend using the 10w30 engine oil as recommended by case. Here is a comparison of 5W-30 vs. 4L. As the viscosity of these two oils is very close, they will mix properly. 10w30 can also be used. On the other hand, the 5w30 is a motor oil with a higher viscosity than the 0w30. . You can’t mix between regular/synthetic blend/full synthetic but mixing weights, especially if they’re by the same manufacturer, is no problem. The most obvious difference between 5w30 and 10w30 oil is their viscosity. #4 · Apr 8, 2013 (Edited) I would not mix 2. It will work great in your car in Georgia year-round. Mixing the two would likely get you none of the full benefits of either. Basically 5W30. Dec 17, 2016. They should mix well since these two oils have somewhat similar viscosities. Sep 11, 2012. Yes, you can mix 5w30 and 10w40. Bruh. Both oils are 30 viscosity at operating temperature. Will you like something which won’t be helpful for you at all? Well, that’s what mixing 5w30 with 10w30 seems like. In that case, the two oils would have different cold weather viscosities but the same high-temperature viscosity. While starting your engine, 5w40 will have a lower viscosity other than 15w40. If you find it necessary to mix brands of oil, use the same viscosity grade and API service category to maintain performance. It’s best to use the oil viscosity recommended in the owner’s manual, but using a slightly thinner or thicker oil (lighter or heavier viscosity) generally poses no long-term harm. Besides, according to the PSC oil viscosity comparison chart, ISO 100 is equivalent. Theoretically it is not advisable to blend oils. But generally, it’s best not to make a habit of blending different viscosity motor oils. of oil to 1 gal of gas. When it comes to choosing the right motor oil for your vehicle, you may come across different grades and types. Apr 30, 2004. If motor oil is thick, then it is more viscous. In warm climates, they will act very similarly. 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. 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. DS 30-weights are very thin (9. 10W30 is preferred in warmer climates, but you should. #15. There are some rare cases where you have to mix them because you do not have any choice. Better In Cold Weather. Yes, you can use 10w30 instead of 5w30. and how it doesn't agree with these motors due to very tight clearances. 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. If you add 5W20 to 5W30, the result is an intermediate viscosity, which may not flow easily as the original oil. Their chemical compounds are the same. Using 5w40 oil is beneficial to diesel engines. Both 15w40 and 5w40 have a viscosity of 40 degrees. On the other hand, the 10w30, due to low viscosity, is entirely compatible with the gasoline engine. In the case of 10W30 oils, the temperature range is -25°C/-13°F to 30°C/86°F. Yes, you can mix 5W20 and 5W30 and it doesn’t bring any harm to your engine. Canada. First, it’s important to understand the numbers in motor oil grades like 5W30 and 10W30. 25 qts of 5-30. 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. Both are multi-grade oils; however, 5w30 is thinner and faster-flowing oil, making it better suited for light-duty vehicles, while 10w30 has a thicker, slower-moving composition ideal for heavy-duty engine applications. However, it may void your warranty if you tell the dealer about it. Run your straight 30 during the summer if you want to. I have a bit of 5w-30 oil left and I was wondering if I can mix 1 liter of 5w-30 to my 4 liters of 0w-20 oil. Mahzurrah! Apr 16, 2023. Apr 8, 2021. If you can't find it, you can use 5w20, but then that must be replaced with 0w20 at the next oil change. You should now know that yes, you can use 10w30 instead of 5w30 for your car. Therefore, there is no problem in mixing 10w30 and 5w30 since one will be topping up. This means that the viscosity will rebalance and will create a new one. Measure out half of the 5W40: To keep. The net effect of adding 1/2 or 1 gt of anything in your 4. In the 10w40 we have 30. Can I Mix 10w30 and 5w30? Most oils will mix perfectly, provided they have a similar synthetic. Before making a decision, it is important to know the technical specifications of every oil type. The answer is yes, you can use 5W-30 oil in your lawn mower. 1. Measure out half of the 5W40: To keep. 5w30 oil is an excellent option if you drive your vehicle in an area that experiences significant temperature shifts throughout the year. Any quality CK-4 oil can be used in that motor. If the oil is thinner, it has a lower viscosity. But no it won't hurt to use 5w30. However, it is advised against because of multiple reasons. Even if you're on a tight budget, you can afford the $3 difference. Gather your materials: You will need two containers of motor oil, one 5W30 and one 5W40. After all, Jiffy Lube ® knows oil. However, the coolant in the oil definitly needs to be addressed. If your car is not capable of handling the cold thickness of 10W30, then it should not be mixed. It’s a common question with a simple answer: yes, you can mix 5W30 and 10W30 motor oil. 0W-30 and 5W-30 is only a $3 difference. As briefly answered in the intro paragraphs above, the simple answer is YES. These two engine oils are very similar in viscosity; hence, they might mix perfectly in. However, this should only be a stop-gap until you get to your nearest oil change provider. Quick Answer: Yes, you can put 10w30 in a 5w30 engine, but it may not be the optimal choice. However,. The main reason for this is that the two oils have different viscosities, or thicknesses. Both oils are formulated to protect against wear and tear on engine. February 17, 2022. 10w30 – has a rating of around 5. #4. Honda doesn't have the bulk (55 gal) 10w-30 so 10w40 is used in a lot of them. There is no mention of 5w40 motor oil in the recommended list. Both have the same viscosity at higher temperatures, but 5W30 is slightly thinner than 10W30 at cold temperatures. This thread really wasn't intended to push 0w30 although I do prefer it. I do the same thing and add the oils to OPE or top off my engines if needed between OCI's. It doesn't matter that they're from the same manufacturer. Mixing the viscosity of oils will not have any effect on the engine. Let’s take a closer look. Example 5w20 may have a cSt of 8. It will not affect the engine’s performance or efficiency. If the oil will be in the engine during winter and you live in a place where. Yes, you can mix 5w30 and 10w30 oils. While it is possible to mix SAE 30 and 10w30 oils, doing so can impact the overall performance of your lawn mower. Well, mixing won't hurt a thing. But it’s not necessarily ideal. These two oils will flow at different rates due to their weight difference; however, the. 20W40 oils on the other hand work better at a bit higher temperature. Both are the same viscosity at operating temperatures. Can you mix 5W-30 with 10W-30? In general, it is not recommended to mix 5W-30 and 10W-30 motor oils. While they are both designed to lubricate your engine,. This is different than an oil labelled 5W30, which has a thinner viscosity when the engine is cold at 5W. Most oils will mix perfectly, provided they have a similar synthetic. And when the weather is cold, 10w30 will circulate and help your engine get started a lot quicker. The 5w30 has more viscosity index improvers vs the 10w30 so technically the 10w30 would have more oil that lubricates the engine. Blends do not work that way. Yes, the oils may have various additives, which is why the weight rating is varied. As the viscosities of 5w-30 and 10w-30 are ranked. 5676 posts · Joined 2009. If you desperately need to top off a quart, yes. For older engines the new high milage oils are helpful. However, the cold weather viscosity grade will. The two motor oils will stay the same oil. 5w30 – 5w-30 counterpart registers 9. . If you want a 10w30, can bias towards more 5w20 in the mix.