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Can you put 89 gas in a Toyota?


As a seasoned auto service professional at Kevin's Autos, I often get questions about fuel types and their compatibility with different vehicles. One common query is whether you can use 89-octane gasoline in a Toyota. Let’s dive into this topic to provide clarity and ensure your car runs smoothly.


Understanding Octane Ratings


Octane ratings measure a fuel's ability to resist knocking or pinging during combustion. The higher the octane number, the greater the fuel's resistance to knocking. Common octane ratings at gas stations include 87 (regular), 89 (mid-grade), and 91 or 93 (premium).


What Does Toyota Recommend?


Most Toyota vehicles are designed to run on regular 87-octane gasoline. This is specified in the owner’s manual and ensures optimal performance and fuel efficiency. However, some Toyota models, particularly high-performance or turbocharged engines, may require premium fuel (91 or higher). Always check your vehicle’s manual for the manufacturer’s recommendation.


Can You Use 89-Octane Gasoline?


Yes, you can use 89-octane gasoline in a Toyota that is designed for 87-octane fuel. Here’s why:



  • Compatibility: Using 89-octane fuel in a car designed for 87-octane will not harm the engine. The higher octane rating simply means the fuel is more resistant to knocking, which is unnecessary for most Toyota engines but not harmful.

  • Performance: You are unlikely to notice any significant improvement in performance or fuel efficiency by using 89-octane instead of 87-octane in a Toyota designed for regular fuel.

  • Cost: Since 89-octane is typically more expensive than 87-octane, you may end up spending more without any tangible benefits.


When Should You Avoid 89-Octane Gasoline?


While 89-octane is safe for most Toyotas, there are scenarios where it might not be ideal:



  • If your Toyota specifically requires premium fuel (91 or higher), using 89-octane could lead to engine knocking and reduced performance.

  • If you’re looking to save money, stick to 87-octane unless your car explicitly requires a higher octane rating.


Final Thoughts


In summary, you can safely use 89-octane gasoline in most Toyota vehicles designed for 87-octane fuel. However, it’s not necessary and may not provide any added benefits. Always refer to your owner’s manual for the recommended fuel type to ensure your Toyota performs at its best. If you have any doubts or questions about your car’s fuel requirements, feel free to reach out to us at Kevin's Autos for expert advice!


Frequently Asked Questions

Does 87 or 89 get better gas mileage?


The Federal Trade Commission recommends using regular gasoline for most standard cars and notes that: "In most cases, using a higher octane gasoline than your owner's manual recommends offers absolutely no benefit. It won't make your car perform better, go faster, get better mileage, or run cleaner."



Does 89 gas burn faster than 93?


Octane ratings are plastered all over every gas pump, and, contrary to marketing terminology, "premium" does not necessarily indicate a fuel is "better" for your car as much as whether it is "right" for your car. Fuel with an 87 octane rating burns more quickly while higher-octane fuels burn more slowly.



Is it bad if I put 89 instead of 87?


If your car is telling you 87 is alright, it's designed to run just fine on regular unleaded and using 89 won't improve performance or efficiency. However, if you already have 89 in there, topping off with 87 won't cause any issues. These fuels mix just fine within the tank and will burn effectively in your engine.



Can you put 89 gas in a premium car?


If your vehicle requires an octane level of 93, using a lower-grade fuel can potentially cause knocking that can damage your engine. If the octane level is a recommendation and not a requirement, you have a bit more latitude to experiment and see how your particular vehicle fares.



Is it OK to mix 89 and 93 gas?


You can absolutely mix octanes, and they mix linearly. So, if you could fill half your tank with 89 and the other half with 93, you'll end up with a tank of exactly 91-octane.



Is 87 gas better than 89 for Toyota?


So, bottom line is stick to the recommended 87 Octane. That is peak efficiency for your Toyota.



Will my car mess up if I put 87 instead of 93?


If you mean putting 87 octane rating in your performance car that wants 93 or higher, it won't harm anything long-term, but performance will suffer as long as the low-grade stuff is in the tank.



What happens if I accidentally put regular gas in a premium car?


With regular kill your ride. Well the short answer is no so in a pinch you can use regular. But you will likely hear an engine knock. And you might notice a degrade in performance.



Can I put 89 gas in a Toyota Corolla?


You must only use unleaded gasoline. Select octane rating of 87 (Research Octane Number 91) or higher. Use of unleaded gasoline with an octane rating lower than 87 may result in engine knocking.



Can I put 89 gas in my Toyota Camry?


The fact is no Toyota, (Other than the Toyota Supra that has a BMW engine) uses a grade of gasoline above higher than 87. The electronic control module of most Toyotas is tuned to 87 Octane. Many people believe that opting for a higher grade gasoline will improve the performance of your car, but this is not so.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.