Exploring the Compatibility of Regular Gasoline with High-Performance Muscle Cars

As a world-class expert on the Ford Mustang and its history, we delve into the age-old question: can you put 87 in a Mustang GT? In this article, we’ll thoroughly answer this query from various viewpoints, highlighting the pros and cons of using regular gasoline in high-performance vehicles.

Updated October 21, 2023

can you put 87 in a mustang gt

The Ford Mustang GT is an iconic American muscle car renowned for its power, speed, and handling. Since its inception, the Mustang has been a benchmark for performance enthusiasts. However, with the ongoing shift towards more efficient and environmentally friendly fuels, the question of using regular gasoline (87-octane) in a high-performance vehicle like the Mustang GT has become increasingly relevant.

Answer to Question

In short, yes, you can put 87 in a Mustang GT. The Mustang’s engine is designed to run on a variety of fuel types, including regular gasoline with an octane rating of 87. However, it’s essential to understand that using lower-octane gasoline may affect the performance and longevity of your vehicle.


can you put 87 in a mustang gt

  1. Cost Savings: Using regular gasoline (87-octane) can result in significant cost savings compared to premium fuels (91-93 octane). This is particularly beneficial for daily drivers who don’t require the extra power or performance offered by higher-octane fuel.
  2. No Performance Loss: Unless you’re pushing your Mustang GT to extreme limits, using 87-octane gasoline won’t noticeably affect its performance. The engine’s calibration and design can handle lower-octane fuels without compromising acceleration, top speed, or overall driving experience.
  3. Less Corrosion Risk: Regular gasoline contains fewer additives and contaminants than premium fuels, which reduces the risk of corrosion in the fuel system.


  1. Potential Power Loss: While using 87-octane gasoline won’t significantly impact performance, it may slightly reduce power output due to engine knock or pinging (detonation). This can occur when the engine is under stress, such as during aggressive acceleration or high-speed driving.
  2. Lower Compression Ratio: The engine’s compression ratio might be reduced to prevent engine knock or pinging, which could lead to a slight decrease in overall performance and efficiency.
  3. Potential Fuel System Corrosion: Although less likely with regular gasoline, corrosion risk still exists if the fuel system is not properly maintained or if contamination occurs.


In conclusion, you can put 87 in a Mustang GT, but it’s crucial to consider the potential trade-offs between cost savings and performance. If you’re an occasional driver who doesn’t push their vehicle to extreme limits, regular gasoline might be a suitable option. However, if you’re a performance enthusiast or plan to drive your Mustang GT aggressively, premium fuel (91-93 octane) is recommended to ensure optimal power delivery and engine longevity.

As a world-class expert on the Ford Mustang, I’ve highlighted the key points to consider when deciding whether to use regular gasoline in a high-performance vehicle like the Mustang GT. Ultimately, it’s essential to weigh your driving habits, performance expectations, and budget against the potential benefits and drawbacks of using lower-octane fuel.

Note: This article is intended for informational purposes only and should not be considered as professional advice. Always consult your vehicle’s owner’s manual or manufacturer’s recommendations for specific fuel type and octane rating guidance.

can you put 87 in a mustang gt