After changing ATF and Filter, I had to check the level. Went for a good drive (about 25 minutes) on roads that I could do 60mph. Outside temperature was 22C. When I got home, the level was at lower mark. I checked temperature of pan and it was 67C.
I think I am probably close to proper level, but apparently the temperature for measurement is supposed to be 80C. Based on following, I will check it cold in morning.
Did some checking, and I found in several places that the level can and probably should be done cold (20-30C) - which is a lot easier to do in a shop or wherever. For my
722.315 transmission, 10mm below the minimum mark when cold, is apparently equivalent to the upper mark when at 80C.
Quote:
This is from Mercedes Benz Service Manual, Clutches & Transmissions, Starting Model Year 1977. (Published 1980).
This book covers automatic transmissions 722.111 through 722.119. (This includes all 123 models for those years, and a few 107 and 116 models).
"This checkup is made with the engine running, the parking brake pulled, and the selector lever in position 'P', with the vehicle resting on level ground in unloaded condition.
"Prior to the checkup, run the engine for approx. 1-2 minutes at idle speed, so that the torque converter can fill up."
"The oil level checkup can be made with the transmission cold or warm. However, the oil level can be determined more accurately, when the transmission is cold (20-30 degrees C ATF temperature), than when the transmission is warm (80 degrees C ATF temperature). The ATF temperature of 80 degrees C is attained only after driving for some time and can only be estimated even then."
"1. Open closing lever (position A), pull out oil dipstick (6), wipe off with lintfree rag (leather is best)."
"2. For measuring with the closing lever open, immerse the dipstick completely, pull out again, and read oil level."
"3. Upon completion of measuring or correction of oil level, fold closing lever back again (position B)."
"4. At correct oil level and transmission at operating temperature, the indication should be at the max. mark. However, at an oil temperature of 20-30 degrees C, the max. oil level is 30mm below min. mark on oil dipstick." (For these earlier transmissions)
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For later transmissions this excerpt from an MB manual is helpful:
