Mazda Bongo Friendee & Ford Freda Sump Plug Washer.
2.5 Turbo Diesel-(WL-T)-Chassis(SGL3,SGL3F,SGL5,SGL5F,SGLW)
2.0 Litre Petrol-(FE)-Chassis(SGEW,SG3E)
2.5 Litre V6 Petrol-(J5)-Chassis(SG5W)
Should be changed during every oil change and at least on each full service.