Funny thing, I lube my truck gun with either Rotella or marine grease. Neither has ever caused my rifle to look like any of these pics. I mostly shoot Tula/wolf, never clean it, just reapply lube as I see fit (rarely).
Normal range day is 250-500 rounds, easy, then it goes right back under the seat. Thrown in the mud, dropped in the creek, it really catches hell.
If your rifle looks like that with that few rounds, I'd change lube