What does 10W 30 mean in oil?
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 is 10W 30 used for?
10w30 is a multi-grade engine oil ideal for heavy-load engines because of its ability to withstand hot temperatures for a long time without compromising the performance of the engine. This engine oil has a viscosity grade of 10 in low temperatures and 30 in high temperatures.
When should I use 10W 30 oil?
A 10W flows well in cold weather, to protect the engine at start up, but it’s is too thin for use in the summer. A 30 grade oil, thick enough to protect in the heat, was recommended for summer use.
What’s the difference between 10 30 and 10W 40 oil?
The short answer is that the only difference between 10w30 and 10w40 is how they perform high temperatures. 10w30 is thinner or more viscous than 10w40 at higher temperatures. What this means is that at higher temperatures, 10w30 is thinner than 10w40. At lower temperatures, 10w30 and 10w40 perform exactly the same.
What is SAE 10 oil?
The SAE 10 Oil category represents lubricants that have a viscosity grade of SAE (Society of Automotive Engineers) 10. This grading system tells you the thickness of the oil and how it is affected by temperature. In this case, the “10” represents the thickness of the oil at operating temperature.
What does the 10 in 10W30 mean?
Viscosity measures how much motor oil can resist flow. That’s why you see two numbers on most oils. For Example: 10W30. This means the viscosity is at 10W when the engine is cold and 30 when the engine is hot. Low viscosities are good for cold temperatures (hence the “W” association) because the oil is thinner.
What happens if I put 10W40 instead of 10W30?
The basic fact that “40” is greater than “30” tells you that. 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.
Can I use 10/40 oil in my lawn mower?
SAE 30 motor oil is commonly recommended for use in a lawn mower engine, but the safest best is to use the type of oil your lawn mower manufacturer recommends. Often 10W-30 or 10W-40, the same motor oil types that are used in vehicles, can also be used in a lawn mower.
What viscosity is SAE 10?
Motor Oil Viscosity Classification System
| SAE VISCOSITY GRADE | BORDERLINE PUMPING TEMPERATURE °C | KINEMATIC CENTISTOKES (cSt) AT 100 °C |
|---|---|---|
| 20W | -15 | 5.6 |
| 25W | -10 | 9.3 |
| 20 | – | 5.6 |
| 30 | – | 9.3 |
Is 10W30 oil good for high mileage?
For an older, high-mileage passenger car, it is recommended to switch to a thicker viscosity oil , such as 10W-30, when approaching and passing 100,000 miles, to lubricate the engine well for preservation.
Can I use 10W30 instead of 5W30 oil?
There is no major issue should you use 10w30 instead of 5w30. Sometimes, it is even preferable to get thicker oil when running on engines with higher mileage. Another minor benefit of utilizing 10w30 is that it contains less improvers in viscosity .
Should I use 10W30 or 10W40?
The 10w30 engine oil works best if you live in colder regions, as the heat from the outside is not too great and the only heat acting on the engine is the heat generated by the engine itself. However, if you live in a hotter region, we recommend that you choose 10w40 engine oil.
Should I use 10W30 oil for summer?
Answer: There is absolutely no need to switch to 10W-30 motor oil in the summer if 5W-30 is an acceptable grade for your engine. While some car manufacturers still advocate the use of 10W-30 (or even 10W-40) as an appropriate engine oil option for summer use, it is completely unnecessary .