Guys, My e34 525i(A) M20B25 was in very good condition until recently. Now whenever the engine is cold especially first start in the mornings, the 1st gear does not change until i push it to about 4000rpm. Once jalan a little bit, everything becomes smooth like nothing is wrong. Some say sudah koyak, some say need to just change oil & filter and so on. What should i do ? plan to keep the baby for a long time. Any advise and cost ????? Thanks guys