With proper care, a large crowbar can easily last years. The good news is – ‘proper care’ for a crowbar is as simple as following these two rules:
1. Avoid bending your bar. If you suspect you may be putting too great a strain on the shaft, stop, and switch to a heavier duty tool.
2. Avoid prolonged exposure to water. Dry your bar soon after getting it wet, and don’t leave it out in the rain.
3. If your bar becomes dirty during work, clean it using a non-corrosive oil, such as WD-40. WD-40 lifts dirt from the surface of metals, and leaves behind a protective coating of oil residue, which will help to prevent soil corrosion during further use.