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Message: <blockquote data-quote="Richard L" data-source="post: 983398" data-attributes="member: 52972">ebock,That's just not true.  A simple tranny flush only replaces the old fluid with fresh fluid...that cannot cause problems.  Where people make mistakes is using the wrong tranny fluid...typically a universal fluid which is a No No.  The other mistake is letting some transmission flush jockey convince you that you need to use there special snake oil cleaner.  You don't need any additives or cleaners, just the proper Mecon-V fluid or a 100% compatible synthetic.  Just don't use a universal fluid (one kind for all transmissions)The only shops that don't recommend a transmission flush are the ones that don't have a transmission flush machine.  You are 5 times more likely to have problems with a conventional fluid/filter change with pan gasket leaks or other problems created by the idiots trying to adjust the bands, etc that they are charging you for an unneeded service.People who complaint that they had a transmission flush and then the tranny failed afterwards often were way past the service interval when they detected some transmission shifting/slipping malfunction and then went in for the tranny flush hoping it would fix the problem...when it didn't they blame the failure on the transmission flush and claim the tranny was fine before the flush....ya, right!Even Pat Doss of TV's MotorWeek has been pushing transmission flushes over fluid changes for many years now.  Both of my Sport Trac tranny flushes were done at a local shop where I watched the entire procedure, and noted that they were using a quality brand name fluid. (Pennsoil 100 % synthetic Mecercon-V compatible fluid)  They even gave a 6 month 6K mile warranty on their work.....Rich</blockquote>

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