Engine on or off for final transmission fluid level check?
Thread Starter
Super Member
Joined: May 2015
Posts: 600
Likes: 45
From: Minneapolis, MN/Breckenridge, CO
2010 E550 4Matic Sport P2
Engine on or off for final transmission fluid level check?
I'm reading conflicting sets of instructions. I did the fluid swap on mine and the car drives great, but my paranoia is never ending. I want to ensure I did the procedure correctly.
Also what impact one way or another would running or not have as far as under/over filled with engine on vs off and vice versa (curiosity)
722.9, white overflow tube on an early w212 E550 (red fluid).
Thank you!
Also what impact one way or another would running or not have as far as under/over filled with engine on vs off and vice versa (curiosity)
722.9, white overflow tube on an early w212 E550 (red fluid).
Thank you!
MBWorld Fanatic!
Joined: Feb 2004
Posts: 1,001
Likes: 37
From: NY
2014 E350 4Matic
From my mechanic for my M113 V8 (C55 AMG) with the five speed transmission (722), all transmission fluid level checks are done with the engine running and the tranny fluid at proper operating temperature. This makes a huge difference in level readings. Overfilling the tranny can blow seals and valves, while under filling causes premature wear, missed and rough shifts.
