JOSEPH NAFTARI MUJUNGU

NEWS What’s the difference between 5W30 and 5w40 engine oil?   The specific  car oil  you should use in your vehicle will be noted in the owner’s handbook or can be found using tools such as  Total Lub Advisor . Some of the most commonly recommended grades are 5w30 and 5w40 engine oils. These are ideal for starting engines at low temperatures and are effective at high engine temperatures, meaning they can be used in most conditions, but how do they differ, and which should you use? In this guide, we explore these two grades of oil, what they’re good for, and why vehicle manufacturers note you should use one instead of the other.    What does 5w40 and 5w30 mean?   For  each grade of engine oil , the ‘w’ stands for ‘winter’, as per the Society of Automotive Engineers (SAE) multigrading system. The number preceding the ‘w’ indicates the oil’s viscosity (or thickness) at low temperatures, and the number after it indicates viscosity at higher temperatures (100°C for kinematic viscosity, and