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What gas does a 2007 Chevy Trailblazer take?

In general, a 2007 Chevy Trailblazer runs on regular unleaded gasoline with an octane rating of 87. The higher-performance TrailBlazer SS variant, however, calls for premium fuel. The exact requirement can vary by engine, so checking the owner's manual or the fuel door label is the best practice.


Fuel requirements by engine


The TrailBlazer lineup for 2007 offered multiple powertrains, and fuel needs align with the engine mounted under the hood. The following guidelines cover the common configurations for most U.S. models:


Engine-specific fuel guidance:



  • 4.2L inline-6 engine: Regular unleaded gasoline with an 87-octane minimum.

  • 5.3L V8 engine: Regular unleaded gasoline with an 87-octane minimum; premium gasoline can be used but is not required.

  • TrailBlazer SS with a 6.0L V8 (LS2): Premium gasoline is recommended for peak performance (typically 91 octane or higher).


Note: Fuel requirements can vary by market or special edition. Always confirm with the owner's manual or the fuel-filler door sticker for the exact specification.


Ethanol blends and practical considerations


Most 2007 TrailBlazer models sold in the United States are compatible with gasoline containing up to 10% ethanol (E10). If you are evaluating higher-ethanol blends or traveling outside the U.S., consult GM documentation or your dealer to confirm compatibility and warranty implications. Regular maintenance, including proper spark plugs and air filters, helps ensure optimal performance regardless of fuel choice.


How to verify fuel needs for your vehicle


The most reliable way to confirm the correct fuel type is to consult the owner's manual for your exact VIN, or check the fuel label on the inside of the fuel door. This ensures you follow the specifications for your year, trim, and engine combination.


Summary


For most 2007 Chevy TrailBlazer models, regular unleaded gasoline with 87 octane is sufficient. The TrailBlazer SS variant, however, benefits from premium fuel to maintain maximum performance. Always verify with the owner's manual or the vehicle’s fuel door label, and be mindful of ethanol blend compatibility. This ensures you use the right fuel for your engine and driving needs.

What kind of gas does a 2007 TrailBlazer take?


Fuel & MPG

Cost to Drive$430/mo
Fuel typePremium unleaded (required)
EPA city/highway MPG13/17 MPG



Should I use 87 or 89 gas?


Your car will run just fine. All modern cars can run 87,89,91,93. It's suggested that for maximum power that you use 93. If you're not at a track day event and just daily commuting 87 will serve you well. All modern cars are equipped with knock sensors to prevent engine damage from running lower octane fuel.



What happens if I use 87 instead of 93?


If your car requires 93 octane and you use 87, you may experience engine knocking, reduced performance, and lower fuel economy, as the engine may have to adjust to prevent damage. However, modern cars with knock sensors can often adapt by retarding the ignition timing, so you will likely be fine in the short term. In the long term, continued use of lower octane fuel in a premium-required engine could lead to engine damage and potentially void your warranty. 
Potential consequences

  • Engine knock: The fuel may ignite prematurely, causing a pinging or rattling sound. 
  • Reduced performance: You might notice slower acceleration or a less spirited feel from the engine. 
  • Lower fuel economy: The engine may not run as efficiently, leading to decreased miles per gallon. 
  • Potential for long-term damage: If the engine constantly has to adjust for lower octane, it can lead to internal component damage over time. 
  • Voided warranty: Using the wrong fuel can void your vehicle's warranty. 

What to do
  • Check your owner's manual: If your car's manual says "premium fuel recommended" versus "premium fuel required," you may have more flexibility. If it says "required," it's best to stick with 93 octane to avoid damage. 
  • Drive carefully: Avoid hard acceleration or heavy loads until you can refill with the correct octane fuel. 
  • Refill with the correct fuel next time: To get back to the recommended octane, fill up with 93 octane on your next visit to the gas station. 



What gas to put in a Chevy TrailBlazer?


Regular almost always has an octane rating of 87. Premium or Mid-Grade gasoline is 89 or 90 octane, and Premium Plus fuel ranges from 91 to 94 octane. Almost every Chevy vehicle sold today is rated to use Regular fuel.


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.