Can you mix 0W30 and 5W30?

Mixing 0W-30 and 5W-30 motor oils is generally possible, but there are some considerations:

When It Might Be Acceptable:

• If you need to top off your oil and only have a different viscosity available, mixing a small amount of 0W-30 with 5W-30 (or vice versa) is better than running low on oil.
• If both oils are from the same manufacturer and are of the same type (e.g., both synthetic), they are more likely to be compatible.

Potential Considerations:

• Mixing different viscosities can alter the overall viscosity of the oil, which might affect engine performance and protection. However, the difference between 0W-30 and 5W-30 is relatively small, so the impact is usually minimal.
• Different oils might have different additive packages, which could potentially affect their performance and compatibility.
• Always refer to your vehicle’s owner manual to ensure that mixing oils does not violate warranty terms or recommended specifications.

Summary:

• Mixing 0W-30 and 5W-30 is generally acceptable for short-term use or as a temporary measure.
• For optimal performance and protection, it’s best to use the oil viscosity recommended by the vehicle manufacturer and avoid mixing different viscosities when possible.

Typical engine oils with the viscosity grades 0W-30 and 5W-30