I've carried my Zero Tolerance 0450CF for at least a couple of years solid now. Actually I bought it as soon as I possibly could when it was released so it has seen some action. I only use it for light everyday general tasks so it isn't abused but it is used a lot and I have neglected to maintain it. My ZT0450CF has never seen one drop of oil and it has never been cleaned, … [Read more...] about Zero Tolerance 0450CF Knife Pull Apart and Maintain