Ideally, you would want to use a 10W30 engine oil if you live in colder climates. This is especially important during hot summer days when the scorching heat of the sun can really amplify the heat generated by your engine. A 10W30 engine oil will still be able to protect your engine, but it will thin out very fast that it may no longer be able to prevent the metallic moving parts from scraping against each other. As such, you will have a much better chance of protecting your engine if you use a 10W40 in hot weather conditions.
In the past, car owners had this habit of replacing their engine oil with one that has a higher viscosity rating. For instance, they will replace a 10W40 with a 20W50 in an effort to maintain adequate lubrication through the already-degraded oil passages.
Today, however, this is no longer necessary because of the significant improvements in oil chemistry, machining, and oil filtration retaining the full integrity of the oil passages. Your car manufacturer recommended a particular engine oil viscosity rating for a reason. It is always in your best interest to heed this recommendation unless you have a much better understanding of just what level of viscosity your engine truly needs. Related Post: Best Oil Additives. The two-bucket method reigns supreme.
Parts store head gasket sealer is usually sketchy but ChrisFix found a decent fix. Sign up today to stay tuned. The Viscosity of Oil Before we start deciphering the numbers on these oil viscosity ratings, let us first establish a clear understanding about the viscosity of the oil.
Go to mobile version. Which oil is thicker 5w30 or 10w30? A higher viscosity oil , such as 10w30 ,will flow slower at low temperatures compared to a lower viscosity oil like 5w A higher viscosity or thickeroil will seal better than a low viscosity oil. A thicker oil will also provide better lubrication of criticalengine parts. Ioseba Guldreih Pundit. Can you mix 5w30 with 10w30? If your car contains a typical multi-grade oil, such as 5W or 10W , you can use most anymulti-grade oil to "top off" your oil and bring it up to a properlevel.
Mixing the viscosity of oil has no effect on theengine. Abundio Schatzle Pundit. Can I put 10w30 in 5w 30? According to the owner's manual, car manufacturerrecommends 0w or 5W - 30 engine oil. But theprevious owner has used 10w - 30 oil. Balazs Kareche Teacher. What happens if you use the wrong oil? The brand of motor oil matters little, but itsviscosity grade 10W, for example is important.
Use onlywhat the owner's manual specifies. Using the wrong oil canlead to reduced lubrication and shorter engine life. If themanual says to use synthetic oil , do so. Nayana Picard Supporter.
What does the W stand for in oil? The " w " in motor oil stands for winter. The first number in the oil classification refers to a coldweather viscosity. The lower this number is, the less viscous your oil will be at low temperatures. For example, a 5W- motor oil will flow better at lower temperatures than a 15W- motor oil.
Modest Calm Supporter. Magnus is the owner and main author of MechanicBase. He has been working as a mechanic for over 10 years, and the majority of them specialized in advanced diagnostics and troubleshooting. Certified Automotive Diagnostic Technician.
I do have Toyota Vitz 1KrFe cc engine. Recently done head assembly replacement work because of oil consumption issue. All I want to know that because of not having actual mileage of engine recently purchase which oil grade shall I use currently using 5w30 liqui moly Tec AA series also I live in a region where temperature get rise to 45degree in summer and range 5 to 7 degree in winter. Kindly do guide can I use same oil grade in summer or go for little thick grade like 10w Last, I Am not daily driver like it take around 3 to 4 month to drive about to km.
Contents show. Understanding Oil Viscosity. Understanding Oil Grade. When to use 10W30 Oil. When to Use 10W40 Oil. Mixing 10W30 and 10W40 Motor Oils. Still have questions? Leave a reply. If you have a car question, submit it to our community for a faster answer.
Cancel reply. Your Comment. From their ratings, it is clear both 10W30 and 10W40 are multi-grade oils that can work well in cold and hot temperatures. The formula means the two oils have a viscosity of 10 in winter. Therefore, they have the same flow rate in cold weather, and hence a similar performance.
The point of departure between the oil types is the hot temperature rating. The 10W30 and 10W40 are pretty much the same for cold weather use, given they have the same rating. The flow rate is the same, and hence the oils offer similar protection for the engine parts and have the same effect on startup in the winter.
However, when it comes to the hot weather performance, the oils differ, given they have different ratings.
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