What is the viscosity of motor oil?
Motor oil viscosity is the measure of its resistance to flow. Low-viscosity oil (e.g. 0W-20) flows faster than high-viscosity oil (e.g. 20W-50).
What do oil viscosity numbers mean?
The short answer:The numbers represent the viscosity of the oil and the W stands for WINTER. 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.
What viscosity is 30 weight oil?
What is Oil Viscosity a.k.a. Oil Weight?
| SAE Viscosity Grade | Low-Temperature (°C) Cranking Viscosity cP max. | Low-Shear-Rate Kinematic Viscosity (cSt) at 100 °C min. |
|---|---|---|
| 16 | – | 6.1 |
| 20 | – | 6.9 |
| 30 | – | 9.3 |
| 40 | – | 12.5 |
Which oil is better 5W-30 or 10W 30?
5w30 provides better lubrication compared to 10w30. It is best suited for private vehicles and light-duty diesel and petrol engines, while 10w30 is more suitable for commercial vehicles and other cars with heavy load engines.
What does 10W 30 mean?
Answered January 07 2020. 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.
What weight motor oil is thicker?
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.
What is 30 weight oil used for?
Use. SAE 30 oil is typically used for smaller air-cooled engines, like the ones in small tractors, lawnmowers, and chain saws. Most motor oils today are multi-grade oils that will perform well in all seasons.
What is 15W-40 oil used for?
ADVANTAGE 15W-40 HEAVY DUTY DIESEL ENGINE OIL can be used with complete success in over-the-road diesel trucks, off-highway diesel equipment, farm tractors, and passenger cars and light trucks with diesel, turbo-charged diesel engines, or gasoline engines and is backward compatible with previous API Oil Categories.
Can I use 20W-50 instead of 15w40?
It is best to use the same brand, type and weight of oil you put in at the last oil change. Unless you are at the fringes of temperature range for the 15w-40 oil, putting the 20w-50 in isn’t going to change the viscosity of the oil enough to damage anything.
What happens if you use 10W40 instead of 5w30?
If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters. Similarly the oil viscosity will be higher and oil thicker than specified during summers.
Can I mix 10w30 and 5w30?
No- you wont get the desired output by mixing these two oils. Because , both have different grades, 5w30 is more light and the density is less , and is intended for light usage (scooters). Whereas a 10w30 is a higer grade with more density and suitable for more higher capacity engines.