Can You Put 5W 40 Oil in a 5W30 Engine
Yes, you can put 5W-40 oil in a 5W-30 engine. The 5W-40 oil is a higher viscosity than the 5W-30 oil, so it will provide better protection for the engine components. However, you may notice a decrease in fuel economy and engine performance due to the increased friction from the higher viscosity oil. What Happens…
