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Message: <blockquote data-quote="ess530i" data-source="post: 13003" data-attributes="member: 13496"><p>hi to all E60 owners...just wondering if anyone have face any issue with your auto transmission before? hope i'm not the first...but i'm getting mis-shift from 4th to 5th gear when the car is hot (after some hard drivin). i still feel that the transmission is strong as the other gears shift well just the damn 4th gear. called a couple of auto tranny specialist like hi-tech recond & mscope both said it has something to do with the valve body and replacing it would cost close to RM10k. i replaced the auto tranny oil (after 20k km) and felt improvements but problem still persist when engine is hot.additional question:1. has anyone installed an external transmission oil cooler on their e60? and recommendation or comment on this?2. could the mis-shift problem be caused by wrong ratio of air/fuel? i've read somewhere in the forums that it its possible. what is the explanation to this?i can still live with the problem but cant think of my ride as a UDM until it is resolved. thanks...</p></blockquote><p></p>