ZDDP
(zinc dialkyl dithiophosphate or
zinc diaryl dithiophosphate)
is widely used as an
anti-wear additivein engine oils
to protect heavily loaded parts, particularly the valve train mechanisms
(such as the camshaft and cam followers) from excessive wear. It is also
used as an anti-wear agent in hydraulic
fluids and certain other products. ZDDP is also an effective
oxidation inhibitor. Oils containing
ZDDP should not be used in engines that employ silver alloy bearings. All
car manufacturers now recommend the use of dialkyl ZDDP in engine oils for
passenger car service.
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