Jay wrote:

I was under the impression that Voyager used fuel efficient versions
of the traditional aircooled engines commonly used today, so I'd like
to hear more about the pickup truck stories.

Do your homework. 60 seconds of Google and you would have learned that Voyager used
a pair of Teledyne Continental IOL-200 engines. In case you don't know it, that "L"
in the engine type means "liquid cooled".

Russell Kent