D.King hydraulic filters are designed to maximize system cleanliness, and provide the best machine performance and component protection. Due to the differences between the hydraulic systems, its important to choose the right filter for each system. The key to extending hydraulic and power train component life is to reduce contamination. Choosing the correct d.King filter is essential in minimizing damage to components from abrasives. We offer standard, advanced, and ultra high efficiency filters to best meet machine and application needs: 1) standard efficiency filters are largely for older machines, where tolerances were more forgiving. Designed to maintain system cleanliness in most general and light duty applications. 2) advanced efficiency filters have increased contamination control without giving up dirt-holding capacity for stricter component and emission requirements in newer machines. Its an upgrade from standard filters to provide an increased level of protection against accelerated wear with a special filter media to provide greater protection in moderate to severe conditions. 3) ultra high efficiency filters provide optimum contamination control in all applications while still maintaining capacity. The filters super-fine synthetic media removes a higher proportion of fine particles for optimum contamination control in moderate and severe applications. Ultra high efficiency filters are recommended as a clean-out filter after any service work.