Rick's STS Posted January 30, 2004 Report Share Posted January 30, 2004 I read somewhere on the forum about flushing the tranny when changing fluid. It was very detailed and I even saved it on the computer. However a few days ago I read that I should not flush the fluid in my tranny just change it an clean the filter screens. The car is older and the service history is questionable. It is very clean and runs well, but I have been slowly repairing the "little things" struts, bushings, etc. I have been on top of the oil and other fluids but now it is time to make sure that the tranny is taken care of. I have had it for 6 of its 135K. What is the verdict. Flush it or just change it? Link to comment Share on other sites More sharing options...
careldo Posted January 30, 2004 Report Share Posted January 30, 2004 change it --lots of info in archives on this. careldo Link to comment Share on other sites More sharing options...
Ranger Posted January 30, 2004 Report Share Posted January 30, 2004 You can flush it if you do it yourself by removing the trans fluid cooling line that goes into the radiator end tank then start the engine and replace fluid as it is pumped out though it is probably not neccessary. DO NOT let a trans shop or anyone else hook it up to their machine an flush it. As previously mentioned check the archives and see Bbobynski's post re: flush's. Link to comment Share on other sites More sharing options...
Bob*97 SLS Posted January 30, 2004 Report Share Posted January 30, 2004 I saved an old reply from Guru about flushing. Check under "Admin & Sight Suggestions" then Old Discussion Board Archives . Link to comment Share on other sites More sharing options...
tjtjwdad Posted January 30, 2004 Report Share Posted January 30, 2004 Since I'm just getting used to the new site ... where are the archives located? Jim White Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted January 30, 2004 Report Share Posted January 30, 2004 The post he is referring to: http://caddyinfo.ipbhost.com/index.php?showtopic=8 The new archive of how-to articles will be here: http://caddyinfo.ipbhost.com/index.php?act=SF&s=&f=9 and of course you can use the Search function found to the upper right of any topic page (like this one) http://caddyinfo.ipbhost.com/index.php?act=Search&f=3 Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
JasonA Posted January 30, 2004 Report Share Posted January 30, 2004 In short, the advise was just to not let anyone put your transmission on a flushing machine (or put any other part on your car on a flushing machine). A machine may or may not really be clean inside and you never really know what you're going to get. A drain/refill is the best way to go. Jason(2001 STS, White Diamond) "When you turn your car on...does it return the favor?" Link to comment Share on other sites More sharing options...
RalPh Posted January 30, 2004 Report Share Posted January 30, 2004 I posted this over at the old forum last year about how I flushed my fluid http://caddysearch.netgetgoing.com/mbarchi...id=caddymb-8151 Link to comment Share on other sites More sharing options...
tjtjwdad Posted January 31, 2004 Report Share Posted January 31, 2004 Thanks Bruce Jim White Link to comment Share on other sites More sharing options...
Rick's STS Posted February 2, 2004 Author Report Share Posted February 2, 2004 Thank you all for the direction and as usual great advise! Link to comment Share on other sites More sharing options...
Dloch Posted February 2, 2004 Report Share Posted February 2, 2004 The 4T80E on the Northstar cars has a drain plug for the side cover that is hidden under the lower oil pan to drain all the oil from the unit. Remember to remove it if servicing a 4T80E. Is this plug obvious too see once the pan is removed? I will be doing this in the near future. Dennis Dennis Link to comment Share on other sites More sharing options...
rjhat Posted February 3, 2004 Report Share Posted February 3, 2004 I must agree with jadcock. Flushing the transmission should be done only if you have a problem with your tranny and the next step is to have it rebuilt. If you flush a tranny you could put seals and other parts under stress that wouldn't normally be. There is always a chance that you could end up having more problems. If you really want to flush the transmission, try this. Drain and refill the transmission. Drive it for about 500 miles and repeat. The end result will be similar without having put the tranny through the stresses of a flushing machine. If anyone dissagrees with this, please enlighten me! Link to comment Share on other sites More sharing options...
acklac7 Posted February 3, 2004 Report Share Posted February 3, 2004 My dad had his tranny flushed on his chrysler about 6 monts ago, 4 days later it started to leak...and has been leaking ever since. He took it back to "speedy lube" and they gave him some b/s run around saying that it wasn't there fault....yeah right. Anyway watch out for those pan bolts on a 92, when I changed the fluid on my 95 I broke a couple...got 2 be gentle A.J. Link to comment Share on other sites More sharing options...
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