Crucial for older water-cooled models (996/997.1 and early Boxster/Cayman) to check for cylinder bore scoring, a costly engine failure point.
Considered the "ultimate" modern analog 911 ; it fixed the major engine issues (IMS) of previous years. used porsche buying guide
The 911 holds its value the best among all models, followed by the Macan in the SUV category. Crucial for older water-cooled models (996/997