engine has much more rotations than transmission

that is why engine oil need to be replaced much more frequently;

所有跟帖： 

• 这种理解应该是片面的，发动机和变速箱的工况是不一样的，其油液服务的目的也不同， -mountrobson- ♂ (359 bytes) () 05/12/2023 postreply 15:15:17

• hydraulic power -萨克斯风- ♂ (228 bytes) () 05/12/2023 postreply 15:25:18

• The important reasons are -MoonRiverMe- ♂ (160 bytes) () 05/12/2023 postreply 15:15:45