JohnDow HDC-150-94 Heavy-Duty Oil Filter CrusherJohnDow HDC 150 94 Heavy Duty Oil Filter Crusher The most effective solution for the storage and disposal of used oil filters is a filter crusher. This heavy duty filter crusher assures compliance with federal, state and local regulations for draining oil filters. The rugged, steel filter is constructed with an air hydraulic design for long lasting operation. Reduce the oil filter size by up to 75% and removes better than 95% of the residual waste