I’ll counter with the jaguar xk engine in production for 43 years.
https://en.wikipedia.org/wiki/Jaguar_XK_engine
I assume the American s will be by with a pushrod v8 soon.
Actually I'll give a V6 instead:
https://en.wikipedia.org/wiki/Buick_V6_engine
1961-2008.
Actually I'll give a V6 instead:
https://en.wikipedia.org/wiki/Buick_V6_engine
1961-2008.