Is It Safe to Mix 91 and 98 Octane Petrol in Your Car?

Learn if mixing 91 and 98 octane petrol is safe for your vehicle and what impact it has on engine performance.

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Mixing 91 and 98 petrol is generally safe for most vehicles. However, it's important to check your car's manual for recommended fuel types. Combining fuels will result in an octane level somewhere in between and, while it may not harm the engine, it won't provide the same benefits as using the correct octane level for your vehicle.

FAQs & Answers

  1. Can I mix different octane petrol grades in my car? Yes, mixing 91 and 98 octane petrol is generally safe for most vehicles but may affect engine performance depending on your car's specifications.
  2. What happens if I use a lower octane petrol than recommended? Using a lower octane petrol than recommended can cause engine knocking, reduced efficiency, and potential long-term damage.
  3. How do I know which octane petrol is best for my car? Check your vehicle’s owner manual for the recommended fuel octane rating to ensure optimal performance and avoid engine issues.