not your normal 722.9 fluid & filter diy - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 09-27-2015, 01:16 PM Thread Starter
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Date registered: Mar 2008
Location: Indio CA
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not your normal 722.9 fluid & filter diy

For routine maintenance purposes I've decided to change the filter and fluid on my 2004 S430 with 722.901 trans.

Vehicle was leveled with all lift pads at the same height. Star used for trans temp. Trans fluid was left draining for 20 hours and here are the strange fluid quantities I ended up with.

Drained 8.5L
Initial fill 9.5L (overflow)
Drained at 45c 3.5L

That leaves 6L installed which is 2.5L less than what was pulled out. No glycol contamination, never noticed a trans problem before or after the fluid change since I purchased the vehicle about 35k miles ago. The only conclusion I can come to is some one over filled the trans in the past, maybe when the pan modification was implemented.

1999 SL500 155k miles
2003 C32 155k miles
2002 S55 178k miles
2004 S430 210k miles
2003 E320 110k miles
2004 E500 180k miles
2003 E500 120k miles
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