Not sure what the deal is, I know that mine was replaced, but the tube itself appears to be unchanged. When I add 2.5 quarts I am at the full mark on the stick. I did a complete oil change, added 5 quarts, then filed a line in the stick. Driver's side dipstick, and the tube appears to be uncut, the original convex dent is on the top of the tube, but I haven't pulled it out of the engine to know for certain.