oil slinger - yes or no?

Although I am sure lots of them have been left off, I see no clear advantage to it whatsoever. In fact, if I ever get a core that's missing one, I get a replacement. Whether it keeps oil off the crank, or slings it all over the timing chain or both, the factory obviously felt the need to include them in the design. I've torn down lots of engines, including some pretty high horsepower ones, and to date, I've never seen a problem caused by the oil slinger being installed. Chrysler still sells them in the MP catalog, so they must see a need. My 1956 331 Hemi even had one. I say put the thing in.