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  #1  
Old 09-30-2001, 08:52 PM
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Join Date: May 2001
Location: Florida
Posts: 1,105
afraid to have tranny oil changed, can anything bad come??

I'm afraid to have the tranny oil on my 83 300SD w/150k on it changed. Reason is my bosses tranny went right after it had the oil changed, and i've heard of other peoples doing the same thing. I found the "complete flush" thing at tire kingdom for 50bucks w/coupon, normally 100. I'm afraid theyll tell me that it has "sand" or a ton of grimy stuff in it and that it's shot. So if they change the tranny oil can anything bad happen. The tranny doesn't slip one bit right now and it shifts a little funny at times, kind of flaring, but i think it's just an adjustment. Any insight on this? i know changing is supposed to help it, but i'm afraid theyll tell me what i dont' want to hear. are these trannys supposed to go at 175k? thanks for your help and sorry for all the questions. OH one more question, on my dad's 97 528i how often if ever should tranny fluid be replaced? we want it to go till 300k miles w/out any major work. Thanks
Ryan

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Old 10-01-2001, 02:31 AM
turbodiesel
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Change your fluid, its simple. Your trans still shifts good, you have nothing to worry about if you change it. Here's a quick outline..

Get transmission pan gasket and filter (about $20 from dealer)
Get 7qts ATF Mercon/Dextron

Remove 5MM hex drain plug from trans pain, let drain
Remove (6) 13MM bolts from trans pan, drop pan and leave it directly under the tranny.
Remove the 3 screws holding the filter on, and be careful, this little filter holds alot of fluid.
Replace filter
Drain pain contents
Put new gasket on
Reinstall pan

If you feel ambitions, drain the tourqe converter, rotate it until you see the drain plug thru the acess hole and drain

If you dont drain the TQ converter, add about 3.5QTS, if you do, add about 7.

John
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Old 10-01-2001, 08:14 AM
sokoloff
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Not sure that you need to feel ambitious to drain the torque convertor. It should be a routine part of changing the transmission fluid. Otherwise you only change half of the fluid. I bet a lot of the Quick Lube type places don't drain it. Also never wipe anything inside the pan or transmission with a cloth rag. A little piece of lint can cause you some problems. Just let it drain and drip, drip, drip as long as you can take it. Then fill it up about halfway, maybe a little more and start the car. This gets the fluid into the torque convertor. If you try to pour all the fluid into the dipstick tube without getting it into the torque convertor, you'll end up with a few quarts on your driveway. At least that's the way it is on the 123's.

Len

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