... , EPM, PPD, ZDDP Lubricant Additive The common used sigle agent series include the following types: 1. oil detergent: T104 T105 T109 T106 ... mainly include the following types: 1. engine oil combinations:LZ8900L, T3135, RHY3141, etc. 2. gear oil complexing agent:T4202, KT320A, LZ1045 etc. 3 ...