I used Fuchs Titan 4134 last time in the CLK (same 722.6 A/T). I do it every 30k or so as it's a 2002 year without a torque converter drain. This is the second time I've done it on this car, both times with 4134, and all is well.

Any MB Bevo 234.12 or 236.14 fluid will work, they're backwards-compatible. If you can find an APPROVED 236.10 fluid, that is fine too. Just avoid anything not on the Bevo site, many fluids will say "recommended for MB 236.10" when in reality they are not factory-approved fluids. I wouldn't roll the dice on those.

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1995 E300 Diesel
~300k

The transmission is "sealed for life", and the marquee line is that it never needs service. So when you service it, you have to break off that cap, refill the transmission, install a temporary dipstick to measure fluid level, and then install a new sealing cap. Just another brilliant design.

X2 on the 134 and I throw in a couple of super magnets into the pan.

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1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250

Are you able to recommend particular magnets to purchase?

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife