Oldsmobile straight-8 engine

1948 Oldsmobile Straight-8 engine
Oldsmobile inline 8 engine at the R. E. Olds Transportation Museum

Oldsmobile produced a straight-8 engine in the 1930s and 1940s. This was the company's top engine choice from 1932 until the 1949 introduction of the overhead valve Rocket V8, and was briefly exclusive to the Oldsmobile L-Series.