That would be pretty hard to do a search for. I have mentioned before that somebody should permantently post some photos at the top of this section, but nobody has.
Anyway, GC looks like regular Syntec. It is only available in 0w-30. It will say "Made in Germany" on the back of the bottle.
Anybody on bitog able to pour some green GC into a clear container and take a quality pic against a neutral background to permanently post here for our eyes who have not ever seen the green gold to feast on?