Oil enters the Donaldson Endurance™ Plus filter just as it does in today’s standard lube filters. As dirty oil enters the replenishment container, a gel containing a concentrated blend of additives is introduced into the oil. This specially-formulated mix includes the detergents, dispersants and antioxidants needed to dramatically increase oil life.

Removes Contaminants Better
The oil continues its normal flow to the media cartridge and passes through our Synteq™ Filtration Media technology where even the smallest contaminants are removed. Clean, fully-replenished oil is then returned to the engine.

This unique additive replenishment process is optimized to effectively maintain the healthy condition of the oil and engine, doubling the miles between oil changes.