Mercedes-Benz W126 automatic transmission oil and oil level
How do I check the oil level of the W126 automatic?
Check the level on the dipstick with the car on level ground, the transmission warm and the engine running. Cycle through the gears and leave the selector in P or N. Wipe the dipstick, push it back in and read the level. The level must be between the MIN and MAX marks.
What oil does the W126 automatic transmission use and how much does it take?
A suitable oil is Dexron II or III or an ATF 220 type ATF. Filling a dry 722.3 transmission takes 7.3 litres; an oil change takes 6.2 litres (owner's manual figures). If the quality of the previous oil is not known, change the oil and the filter.
What is the W126 automatic's oil change interval?
The factory recommendation is 60,000 km. In hard use the interval should be shortened, and some change the oil about every 40,000 km. Oil that is dark and smells burnt, or is cloudy, is not normal.
What does too much oil in the W126 automatic cause?
Too much oil can foam and be pushed out of the breather. It can disturb shifting. Even too little can make the transmission behave oddly. Excess oil should be sucked out.