Here is the Benchmade link to Doug's RSK knife. I don't have the RSK (yet) but I do have one of their Mini-Griptilians.

Here is the Benchmade link to their knife care.

DISREGARD THIS PARAGRAPH - SEE DOUG'S RESPONSE.
Not very descriptive of exactly what to do, but I'm guessing with salt water you'd want to rinse/clean the knife in tap water, dry it, and lubricate it with something like WD-40.

I've found the cans of compressed air at the computer stores work great for blowing out the crap and dirt that accumulates in the knife that is hard to reach.