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Message: <blockquote data-quote="leforte" data-source="post: 327052" data-attributes="member: 1943">there is only genuine jatco on sale around here, anyway the jatco atf filter is a metal mesh construction, its much sturdier in construction than the fake filtrane unit. no sound or issues with it. recommended to be change at the same time. your friend's atf change issue is well known. the main caused of noise with the fake filtrane filter is usually the o-ring on the filter that connects with the valvebody, the o-ring is often  defective and that leaves a gap for atf to go through and causes a whining sound. sometimes the fake filter element is terribly restricted as well so when the pressure is too high the atf is then suck through the o-ring gap instead , my e39's 5hp18 had that issue when my previous mech installed a fake filter in it.</blockquote>