Are 5W30 And 10W30 The Same? Understanding Viscosity, Performance
While both 5W30 and 10W30 are multi-grade engine oils, they are not identical. The “W” number indicates their cold-weather performance, making 5W30 generally thinner at low temperatures and better for colder climates, while 10W30 offers a slightly thicker initial viscosity. Choosing the right one depends on your vehicle’s specifications, local climate conditions, and how you…