5w30 vs. 10w30 Motor Oil: Can You Use 10w30 Instead of 5w30 in Your Car?

The motorists, more than often, think about whether it is practically feasible to use 10w30 instead of a 5w30 motor oil in the car.  

The problem is essential since using motor oil with the wrong viscosity can backfire for many days. It can even run down the whole efficiency of a car instantly. This article will shed light on different variants of motor oil.

Important Things to Remember

The first number in the motor oil name defines the oil's viscosity. The higher the number, the higher the viscosity. Viscosity is the liquid’s resistance to travel into the engine for beginners. 

The second numerical number specifies the oil's viscosity when it attains maximum temperature. This viscosity is calculated under the high stress and pressure of operational thickness. 

A thin oil may win short-term efficiency, but it has a potential risk of seeping into the delicate auto parts. This scenario can be avoided by treading a middle path. On the other hand, thick oil helps attain a composed temperament for the vehicle.  

The owners can change the engine oil rather than blindly relying on the mechanics. After obtaining relevant know-how, the owners should not underestimate their wits and utilize the right mix. 

What Are The Purposes Of Engine Oil?

The purpose of engine oil is to lubricate all parts of the engine so that friction between different moving parts does not occur. That way, excessive wear, and tear are avoided and it becomes easy for the pistons to move inside their cylinders. In addition to lubrication, engine oil also has the important function of keeping the engine cool. If the engine gets too hot then it can destroy the entire system and lead to a costly repair bill. The quality of the oil you use will greatly impact your ability to perform these functions properly.

Main Functions That Engine's Oil Provides:

1. Provides Lubrication;

2. Neutralizes Acids;

3. Cleans out Sludge;

4. Inhibits corrosion and oxidation.

What Does 5w30 Or 10w30 Mean: How To Properly Read Engine Oil Names?

The engine oil grade is represented by a three-character alphanumeric code. Let's look at each character in the code and what it represents:

  • The first number is followed by a ‘W’. Here the W stands for Winter and shows how the oil will react to a cold start.
  • In simple language, the number preceding W represents a parameter. It informs us how the oil will flow in cold weather.
  • The smaller the number, the better will be the flow.
  • The number in the following part indicates how finely oil will flow at normal operating temperature.
  • how-to-read-oil-names

Why is the viscosity of your engine oil is so important?

Engine oil's viscosity is the most important engine protection feature. The viscosity of your engine's lubricant is affected by changes in speed, pressure, and temperature. The oil's thickness or lightness is called its viscosity. A higher viscosity oil will flow slowly and resist being forced through small spaces, while a lower viscosity oil will flow more easily and be thinner. The Society of Automotive Engineers (SAE) has developed a standard system to measure an oil's viscosity.

The viscosity of your engine oil is important because it affects how well your engine is lubricated. If the oil is too thin, it will not provide enough lubrication and can cause wear on engine components. If the oil is too thick, it can cause excessive oil consumption and can also lead to engine damage. Choose the right viscosity based on your vehicle's specifications to ensure optimal engine performance.

There are many different types of motor oil available on the market, and choosing the right one can be overwhelming. Some oils are specially formulated for specific driving conditions, while others are designed to provide superior protection at all times. Understanding what factors affect oil viscosity will help you choose the right oil for your vehicle.

10w30 vs 5w30

Both 10w30 and 5w30 remain thick in cold temperatures. At the same time, the operational viscosity for both oils is the same. Here, 5w30 is still a better option for small cars as the thick oil can lead to unnecessary drag and excessive temperatures. This horrific scenario compels oil to fly off internal components during motion streaks. The constant flying off then leads to multiple metal-to-metal contacts, resultantly wearing down the whole engine. 

5w20 vs. 5w30

5w30 has higher neutral as well as kinetic viscosity than 5w20. The latter will create less friction owing to being less dense. 5w20 also cares about the delicate engine parts like the crankshaft, valve train, and pistons. Moreover, thinner oil also helps oil movement from the oil pan to the engine. 5w20 is the best option for people living in colder regions.

Conversely, 5w30 is suitable for hot climates where thin oil breaks down quickly. Nevertheless, if you use high-quality oil, you can stick with the previous 5w20 option.

5w30 vs 10w30

The viscosity of these oils varies slightly. Still, the better option for persons living in hotter regions is 5w30, as it works well in sync with engine parts. In the same vein, 10w30 suits the motorists of relatively colder areas. Car owners living under moderate temperature conditions can go with both variants without any second thought.        

5w30 vs 10w40

Both variants are poles apart. The rule of thumb is still the same. Use 5w30 for cold climates while 10w40 for hotter regions. If you choose the other one by mistake, it will ruin the engine's efficiency. The difference is again stark in the viscosity under pressure or temperature. If your car operates under -22 degrees Fahrenheit, it makes it more straightforward, then cherry-picks the 5w30. The warmer variations to this temperature should be accommodated by 10w40. 

Bottom Line

Motor oil specifications should be checked either with the manufacturer or the mechanic. Once finalized, the viscosity can be adhered to in the future. Moreover, motorists can also tinker with the oil specifications if the weather patterns demand. The variations are often listed in car manuals allowing you to experiment with these safely.