I’ve used all the fan clutch brands. The only one that worked was the uro because it was pretty much mildly tight. Moved a lot of air while sitting in traffic. Aux fans rarely came on for temps. My daughter And wife also drive a w124 And it doesn’t leave them, or me, confident when the water gauge is oscillating 2 **** hairs from meltdown. Im don’t with it.

Going to get a variable speed fan setup that ramps up the speed as needed. 16” fan somewhere around 10Ish amps and around 1800+ cfm. I believe this setup would suffice Without putting too much burden on the electric system. I did this my w210 diesel and is was a beautiful thing

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1993 e300
1995 e320
1994 e320
2006 s500 4matic
2004 Jeep wj overland
2001 Ducati 748
2004 Honda shadow aero