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<blockquote data-quote="cklim" data-source="post: 92870" data-attributes="member: 677"><p>Use to involved in AT (Auto Transmission) rebuilt programme for Perdana V6, found out that all V6 AT unit failed because of AT fluid (ATF) brake down due to high temperature built up in the unit <strong>(sudden acceleration/deceleration is the cause for ATF temperature built up).</strong></p><p></p><p>Furthermore <strong>if the unit is not service regularly, metal debris will clog valve body, causing it to slip/knock</strong> when upshifting/downshifting. AT technician told us that ATF should be replaced at every 20k km, while ATF filter is every 40k km (this apply to V6, not sure for BMW thou).</p></blockquote><p></p>
[QUOTE="cklim, post: 92870, member: 677"] Use to involved in AT (Auto Transmission) rebuilt programme for Perdana V6, found out that all V6 AT unit failed because of AT fluid (ATF) brake down due to high temperature built up in the unit [b](sudden acceleration/deceleration is the cause for ATF temperature built up).[/b] Furthermore [b]if the unit is not service regularly, metal debris will clog valve body, causing it to slip/knock[/b] when upshifting/downshifting. AT technician told us that ATF should be replaced at every 20k km, while ATF filter is every 40k km (this apply to V6, not sure for BMW thou). [/QUOTE]
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