Well...I called and spoke with the scag dealer where I bought my turf tiger. The mechanic said Lucas red and tacky was the best to use. I called a couple of other scag dealers nearby and one said a black molly (they didn't know the brand they were using

while the other said mystic j6 (not sure of the j6 but something like that).
All three stated they used the same grease for all zerk fittings.
-bobby