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Message: <blockquote data-quote="tank34" data-source="post: 310967" data-attributes="member: 1332">Well said Nautica1973. I'm also a little concerned by some of the things written here. A couple of forummers have claimed that they have encountered problems in their gearbox after oil change, especially if it has been in excess of 100,000+. I find that hard to accept that because of an oil change, it caused damage to the GB? What I've been told regarding a full GB change is that the old liquids are drained completely, the new one added in and then  the GB is given a quick "bedding in". The car is probably hoisted up and then run in low gear for a few minutes. I can't see how "old" sludge can dislodge and then embed itself in a new place to cause problems. Best bet for cars with mileage in access of 80k, is to do a flush. This is where the old oil is drained, new ATF poured in to "clean" out the GB, then drained again whilst added fresh transmission oil.Also, someone in here whose car was in excess of 100,000 claimed that before he changed oil, whatever sludge/dirt was probably already bedded into the GB, when he changed oil, it must have dislodged and because of that could have caused a leak. I just don't buy that at all, it only means that the GB was not well taken off in the first place and that it is a matter of time before some serious damage is caused.So, in conclusion, if less than 80,000, then go for a change. If in excess, consider doing a flushing, it costs more but worth the extra $$. Refreshing your ATF fluid cannot be possibly bad for the GB.</blockquote>

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