For those not wishing to spring for the coatings DFriedson discussed, but would like to restore at least some of the original look, get a 5-gallon bucket half full of water and add a half cup or so of Simple Green. Use a scrub brush (a big one one on the end of a stick) and scrub down the Line-X with the cleaner. It doesn't require a lot of scrubbing. Rinse well.
As an option, once dry, Armorall it.
-Jay
As an option, once dry, Armorall it.
-Jay