Plastilube was the replacement for Lubriplate, due to it's better wear and, IIRC, "weather fastness" (It won't wash off as readily in wet conditions.)
I prefer Plastilube, but the "real stuff" in the little GI containers is harder to find than other greases any more. Mostly I use "Superlube" (I think that's the name- A nice clear synthetic grease), but haven't altogether abandoned Lubriplate either.