AMSOIL is now introducing the P-Series of Donaldson filters to complement the Endurance line. The expanded offering of filtration products features many applications that differ from, and several that coincide with the Endurance line. Donaldson P-Series filters offer premium filtration at a competitive price. AMSOIL Dealer Synthetic Oil Pros now stocks all of Donaldson's most popular filter applications. Donaldson also develops, manufactures, and markets a full line of hydraulic filters for the protection of machinery and components in hundreds of applications in the factory and on heavy-duty mobile equipment. In fact, Donaldson is considered the world leader in hydraulic filtration. Donaldson coolant filters are designed to maintain the proper chemical balance and reduce contaminants in the engine cooling system. AMSOIL offers a complete line of Donaldson filters with supplemental coolant additive (SCA) technology for the majority of heavy-duty diesel engines service requirements. AMSOIL carries Donaldson's full line of replacement fuel filters, featuring the latest advances in filter media that make the difference between engine power and engine problems.