Car manufacturers usually specify 5W-20 or 5W-30 oil, though some require 10W-30.
These three ratings cover just about every light-duty vehicle on the road, though this is changing as engines become more precise and fussy about specific types oil.
Full-synthetic Oil: These oils are made for high-tech engines.
How do you know what kind of oil your car needs?
There’s no substitute for reading your owner’s manual. It will list what type of oil the automaker recommends for your car. It may also recommend different oil depending on whether you live in a hot or cold climate. The most important thing is to use oil that’s the right thickness, or viscosity, for your car’s engine.
Does my car need synthetic oil?
Typically, high-performance vehicles will be more likely to require synthetic oil, as will vehicles that have a turbocharged or supercharged engine. However, if the automaker for your vehicle does not require synthetic oil for your engine, the oil choice is trickier — and there is no clear answer.
Is it better to use 5w30 or 10w30?
When to Use 10w30 vs 5w30
The only difference between these two oils is cold flow ability: a 10w30 oil will move slower than a 5w30 oil during cold startups. At operating temperatures, both oils will have the same viscosity (30) and will flow and protect identically.
Photo in the article by “Alaska Department of Environmental Conservation – State of …”