In a 5W-30 for example, the number before the W describes the viscosity of the oil at low temperatures. The lower the number, the thinner the oil and the better the oil’s cold temperature/ cold start performance. The number after the W describes how thick the oil is at the engine’s normal operating temperature.Jun 17, 2021
10w30 is thicker than 5w30 because it has a higher viscosity in low temperatures. … Thicker or higher viscosity metal oil has a better seal compared to low viscosity oil. Thicker oil offers better lubrication of motor and engine parts.
When comparing 5w20 vs. 5w30 motor oil, the 20 indicates that the oil has a lower viscosity and is thinner at higher temperatures. … So, due to viscosity, 5w20 is a thinner oil during operating temperatures, whereas 5w30 is thicker during operating temperatures.
The difference between 10W-30 and a 10W-40 is the high temperature viscosity. Obviously, a 10W-40 is thicker than a 10W-30 at high temperature. … Remember that using oil with a viscosity that is too high can result in excessive oil temperature and increased drag.
5w30 is engine oil that has lower viscosity 5 and higher viscosity 30. … 5w40 oil is not thicker has it has a higher viscosity. Temperature. 5w30 has lower viscosity hence it is suitable to use in hot or lower temperatures.
As posted above, mixing 5w30 with 10w40 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. Mixing different oils will not improve the performance or efficiency of the engine in any way.
You might be familiar with terms such as “30-weight” or “10W-30” oil. Those numbers refer to the grade. The higher the number, the thicker the oil. The lower the number, the thinner.
You can’t mix between regular/synthetic blend/full synthetic but mixing weights, especially if they’re by the same manufacturer, is no problem.
Originally Answered: Can I put 10w30 instead of 5w20? You can, but you will get worse mileage, and in most cases shorten the life of your engine, as it will take longer to pump up pressure for your bearings and lifters, and won’t spray your lower cylinders for an extra second or so on each cold start.
As we have just seen, both 10W30 and 10W40 have winter SAE oil grades of 10W. … If you were to put 10W40 in an engine designed for 10W30, the “thicker” oil would lead to friction in the engine and an increased load on the oil pump. The car would have to do more work to get the oil around the engine block.
Newer vehicles can utilize thinner oils for faster lubrication of new engine parts. In contrast, older, high-mileage engines benefit from thicker oils to prevent friction and oil loss.
In practice, this means that each oil is just as viscous at lower temperatures and will remain viscous at -30°C, however 5w40 oil outperforms 5w30 oils at higher temperatures, being effective up to ambient temperatures of 50°C, as opposed to 30°C.
Oils are miscible. You don’t need to worry about adding one to the other in any proportion as they will easily form a solution. You can use 1 litre of 5W30 mixed with 5W40 and it will not cause any sort of ill effects to the engine.
The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well. As long as you’re not hearing knocking or serious mechanical noises from the engine, the heavier oil should buy you many more miles of service from your vehicle.
There are two numbers that define the viscosity of an oil. … The smaller the number, the better it will flow. So a 5W-30 will flow easier than a 10W-30 at start-up temperatures and a 10W-30 will flow easier than a 10W-40 at normal engine operating temperatures.
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. Inside your engine, both oil formulations can withstand temperatures of up to 100°C/212°F. But you know which oil type will work better.
Measuring engine oil viscosity
Viscosity is notated using the common classification “XW-XX”. The number preceding the “W” (winter) rates the oil’s flow (viscosity) at zero degrees Fahrenheit (-17.8 degrees Celsius). The lower the number, the less the oil thickens in cold weather.
The 10W30 designation on engine oil means that the viscosity of the oil is rated at 10W when an engine is cold and 30 when the engine is hot. This is different than an oil labelled 5W30, which has a thinner viscosity when the engine is cold at 5W.
Can I use 20w50 instead of 5w30? 20w50 is actually thicker than 5w30. This will result in less fuel efficiency, less horsepower, and more engine damage because it will have to work harder to rotate. Trust the engineers that made your vehicle.
yes. If you don’t have a choice, adding synthetic oil to regular oil can help you out in a pinch. … Since motor oils are generally made from the same ingredients (base oil and additives), they are typically compatible when mixed.
Using the wrong fluid can cause poor lubrication, overheating, and possibly transmission failure. A mechanic might not be able to reverse the damage, even by flushing the transmission. Mistakenly adding motor oil or brake fluid can also destroy your transmission.
For model year 2001 and Newer: Ford, Honda, Chrysler and other OEM’s specify 5W-20 and 0W-20 motor oil for most all cars and light trucks.
The designation “10W-40” indicates a multigrade oil that is toward the low end of the SAE scale in cold weather, but at the upper end in hot conditions. 10W-40 oil is therefore good for a wide range of weather conditions.
SAE 0W-16 is a low-viscosity oil grade that has recently entered the United States for the first time with the introduction of the 2018 Toyota Camry 2.5L Four-Cylinder model and the 2018 Honda Fit.
5w30 motor oil has a winter viscosity grade of five, meaning it’s less viscous (less thick) at very low temperatures compared to, say, 10w30. It has a hot viscosity grade of 30, which means it is less viscous at high temperatures than an oil such as 5w50.
Modern cars are designed to use lower viscosity oil ranges, so they can properly lubricate ( see attachment) Going from 5w-20 to 10w-30 should cause no harm for one oil change.
MOTOR OIL EXTRA SAE 10W/20 is suitable for vehicles, motorbikes and stationary systems that are operated with monograde motor oils. EXTRA SAE 10W/20 monograde oils can also be used in specific gears and hydraulic systems for which monograde motor oils are required.
Differences between 10W40 and 20W40
20w40 oils have a higher ‘W’ number, which means they will not perform well in colder temperatures, that is the only difference between the two oils.
A 10W40 oil will be thicker in the cold than 15W40 oil, but they will have the same viscosities at higher temperatures. … Hence, a car will start with fewer cranks when holding oil of a lower winter weight. 10W40 oil will perform cold starts better than 15W40 oil.
The thinner the oil is for starting a cold engine the better – and that is regardless of ambient temperatures. A 0W-40 oil is a much better alternative than a 10W-40 oil. The second number is the tested viscosity rating at operating temps (ignoring the precise testing parameters).
Our engine oil of the SAE classification 10W50 is a high-performance special oil for 4-stroke motorcycles of leading European and Japanese manufacturers. Synthetic base oil components in combination with successfully tested additives guarantee high performance.
Is 10w40 good for high mileage? 10W40 is not better than 20W50 for high mileage. The difference between 10w40 and 20w50 is simply that the latter is thicker. As far as gas mileage goes, no oil will improve your gas mileage by changing from 10W40 to 20W50 or vice versa.
oil grades chart
what does the second number in oil mean
what is 30 weight oil used for
oil viscosity explained
sae oil viscosity chart
engine oil specification chart
motor oil weight chart