Buick 3800 supercharged engine regular or premium fuel?

The Buick 3800 supercharged engine requires premium fuel. This is because the engine has a higher compression ratio than naturally aspirated engines, and premium fuel has a higher octane rating to prevent engine knocking (also called detonation).

Here's why:

* Higher Compression Ratio: Supercharged engines compress air more forcefully, leading to higher cylinder pressure. This increases the risk of premature combustion (knocking) if lower-octane fuel is used.

* Octane Rating: Premium fuel has a higher octane rating, which means it's more resistant to knocking. This ensures smoother combustion and prevents engine damage.

Using regular fuel in a Buick 3800 supercharged engine can:

* Cause engine knocking and damage.

* Reduce engine performance and fuel economy.

* Void your warranty.

Always consult your owner's manual for specific fuel recommendations for your Buick 3800 supercharged engine.