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API CD-II :
Service category that denotes service typical of two-stroke cycle diesel engines that require highly effective control of wear and deposits. Oils designed for this service also meet all performance requirements of API Service Category CD. API CD-II became obsolete Jan. 1, 1996.Belts:
The plies of tire cords beneath the tread that determines the tire's diameter and stabilizes the tread by resisting deformation from cornering, braking, and centrifugal forces.