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#1
05-05-2009, 12:36 PM
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A/Trans Overfill = Leak (duh)
Aarrggh! - had my A/Trans [ ‘95 all hydraulic 722.5 behind a 3.2 liter Inline 6] at an indep. shop - just a filter change and partial fluid topoff. Shop overfilled it, and while driving home a motorist reported smoke coming out from underneath (result of A/T fluid leaking onto exhaust pipe). At home, I ‘extractor’ drained approx. 1.5 qts. out, to return to normal levels.
Back to the shop, they apologized, and checked the pan gasket was AOK. But now, I have a (previously tight, dry) trans. that leaks, spotting the floor. It’ll be back to the shop, but......did the overfill & 10 mile drive cause a seal or something to go??? What should I look for? And thanX for your input & help here! 
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#2
05-05-2009, 01:51 PM
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Probably excess fluid on the belly pan or blown back on the undercarriage dripping down.
__________________
Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.)
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#3
05-05-2009, 03:58 PM
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When I accidentally overfilled my trans, the end result was the pan gasket seal blew, and a LOT of fluid was dripping underneath the trans.
No smoke though, so I would have to wonder if perhaps in your case, the excess was coming out of the fill tube? After all, it is in the proximity of the exhaust manifold...
__________________
2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car
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#4
05-05-2009, 09:05 PM
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I've not experienced it, but have been told that it can cause seal damage from internal pressure.
__________________
 Gone to the dark side - Jeff
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#5
05-05-2009, 10:03 PM
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Document, document, document!
If your trans suffers a premature failure (I'm not saying that it will) then you will want an adequate paper trail to ensure that the shop will be paying for your repairs!!
__________________
-tp 1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS 1988 560SEL "Gunther"- 190K passes anything except a gas station 1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition
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