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1995 W140 S280
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58 Posts
Just reread this thread. So this is for a W140? If so, then things change a bit. The W140 used 2 different types of automatics, each with different ATF specs. Also if this is for the second (later) type automatic trans, then you also need to change the conductor plate, connector, etc.

Most importantly, do not subsitute the fluid for the earlier type into the later type trans or vice versa.

If this is for a W140, you really should be asking these questions in the proper forum.
I wound up here while searching for my box (the 722.4). Agree with sbaert cheap fluid isn't worth it - will look for a good brand name.
Mine is the earlier auto with only 4 speeds, I believe the later models had the same 4 speed + 1 overdrive.
Will search in the 140 section again and start a new thread there if nothing comes up. Thanks gents.
 

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'95 E300 DIESEL, '91 600SEL, '92 600SEL
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16,920 Posts
The 722.6 a.k.a. 5G-Tronic 5 speed auto found in the later W140 use a completely different transmission, being a electronically controlled unit vs. the mechanical and vacuum controlled version of the earlier 722.3 4 speed box.

Regardless, the same rules apply re. fluid. Use the proper fluid and change it often.

FYI, the 722.4 never was offered on the W140. The 722.4 is commonly found in the W124 series on the weaker engined gasoline engines and the diesels.
 

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300 CE 24V Sportline
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873 Posts
The 722.6 a.k.a. 5G-Tronic 5 speed auto found in the later W140 use a completely different transmission, being a electronically controlled unit vs. the mechanical and vacuum controlled version of the earlier 722.3 4 speed box.

Regardless, the same rules apply re. fluid. Use the proper fluid and change it often.

FYI, the 722.4 never was offered on the W140. The 722.4 is commonly found in the W124 series on the weaker engined gasoline engines and the diesels.
Yes, true. The 5 speed 722.5 is mechanical and found in 124s. I think it also found its way into early 140s but I'm no authority on those. The 722.5 is a 722.3 4 speed with an electrically controlled overdrive 5th. When working well, it's great but it can suffer problems, mainly due to the 4th/5th control rather than the box itself..

RayH
 

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1995 W140 S280
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58 Posts
I think it's a blessing that my area (West Malaysia) still has an abundance of W140s both running and in yards so parts are aplenty. Add to that the more humble models use the same engine and gearbox as the W124 which is plentiful in neighboring Singapore so one has a fair chance at keeping them running for a long time.

Regarding the gearbox, this was something that caused a great deal of confusion when I was still hunting, and even right now I still have no idea what's going on. A 722.4 shouldn't be in a 140, as a simple goog search and wikipedia result confirms, but my vin lookup below and my car's documents say it is a 722.4. o_O

2607991
 

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'95 E300 DIESEL, '91 600SEL, '92 600SEL
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16,920 Posts
Aha. You've got a 280. That's why your car has a 722.4. The 320 would have had a 722.3 or 722.6 (depending on build date)

Since this is a US based forum, we never got the 280 in W140 guise.
 

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1995 W140 S280
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58 Posts
Ah right, that small detail.
The poverty spec 140 has had 2 surprises for me so far; no soft close pump to inevitably break, and no TT fitting to inevitably lose all my coolant on the highway. :LOL:
 
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