While Buck Knives are certainly built to last, the proper care regiment will keep your knife extra sharp, sparklingly clean, and rust-free for years and potentially decades to come. According to the Buck Knives website, both your knife’s pivot point and blade should be oiled about twice a year. We recommend a good coating of 3-in-1 oil, which can be found at any hardware store, but in actuality just about any household lubricating oil will suffice.