Welcome to the Club, Ian, The ZF automatic gearbox is supposed to be sealed for life, but many members have found that a gearbox oil and filter change at about 75k miles is very beneficial, Regards, Peter.
Hi am new to this forum I have a 1999 s-type car runs mint it's a 3 liter auto j shift box car runs mint in normel drive but won't go in to second gear when u push it across to second it goes in to 3 and 4 ok but it is driving me mad eney help would be grateful to know what mite be causing this problem