The white grease you post and the silicone grease you post are two completely different products, the white grease is a lithium soap petroleum grease, the silicone grease is mostly a bunch of polydimethylsiloxane with some other bits n bobs.
I use good ol' made in Long Island New York, Silicone lube compound by Synco products. - makes of superlube. It works super. 3M silicone paste works nice too, but when I need to restock this item the superlube is on sale. - forget corrossion, it wont even move if splashed with salt water.
Im sure liqui moly must be selling this at premium price (because deutsche) - equally good or even better products are available - like the 3M item.