- 1998–1999 Factory-verified
Wikipedia gives a supercharged 3800 Series II V6 for 1996–1999.
L67 Factory-verified
Also described as Engine, 3800 3.8L V6, supercharged
Also documented for BuickChevroletPontiac
Documented applications
- 1992–1995 Single-source
Series I supercharged engine, 205 hp; Touring Sedan, and optional on the Regency Elite; 1992–1995 from Wikipedia's Buick V6 article (L67 Series I application list) and the Ninety Eight article's text, which dates the supercharged engine 1992–1995 and its 1996 removal; shared C-body code; the Buick Park Avenue article names it for that sibling, but it is Wikipedia, so the row stays single-source
This page aggregates every documented appearance of L67 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.