There's no single answer to how many miles a 3800 Series II supercharged engine *should* last. Proper maintenance is the biggest factor. With meticulous care (regular oil changes with high-quality synthetic oil, diligent attention to cooling system integrity, timely replacement of belts and hoses, etc.), some of these engines have gone well over 200,000 miles. However, others have experienced problems much sooner due to neglect or aggressive driving habits. Supercharged engines, by their nature, put more stress on components than naturally aspirated ones, so this can affect longevity.
Factors influencing engine lifespan:
* Maintenance: This is paramount. Neglect leads to premature wear and tear.
* Driving Style: Aggressive driving puts more strain on the engine.
* Climate: Extreme temperatures (hot or cold) can affect engine performance and lifespan.
* Previous Owner's Maintenance History: Knowing the car's history is crucial. A well-maintained car will generally last longer.
While some owners report 200,000+ miles, consider 150,000-200,000 miles a *potential* lifespan with good maintenance. Anything beyond that is a bonus, and exceeding it depends heavily on the factors above. It's not uncommon for these engines to need significant repairs or rebuilds within the 150,000-200,000 mile range if neglected.
