Can I Use Regular or Premium Gas in My 1981 Camaro with a 5.7 Liter V8? UNVERIFIED
Understanding fuel options for your 1981 Camaro's engine.
There's no confirmed answer to this yet. Below is what is and isn't known — we'd rather be honest than invent a number or a spec. This becomes a full guide the moment we can confirm it; for now, your owner's manual is the authority on your specific car.
Fuel Requirements for Your Engine
Your 1981 Camaro with a 5.7 liter V8 engine is designed to run on race fuel, which typically has a higher octane rating than regular or premium gasoline. Using the correct fuel type is crucial for maintaining engine performance and preventing potential damage.
Race fuel is formulated to withstand higher compression ratios and provide better performance in high-performance engines. Regular gasoline generally has a lower octane rating, which could lead to knocking or pinging in a high-performance engine like yours. Premium gasoline has a higher octane rating than regular but may still not meet the specific requirements of race fuel.
What Isn't Confirmed
It's unclear how your specific engine would respond to regular or premium gasoline without knowing the exact compression ratio and tuning of your engine. While some owners report using premium fuel without issues, others emphasize the importance of sticking to race fuel for optimal performance and safety.
Where to Verify
For the most accurate information regarding fuel requirements for your Camaro, refer to your owner's manual or consult with a professional mechanic who specializes in classic cars or performance engines. They can provide insights based on your engine's specific setup and modifications.
EPA/DOE FuelEconomy.gov data retrieved 2026-10-25.