I used that oil on my Honda S2000 from 100k-200k and it helped with the valve noise and chain tensioner pressure. I switched to Royal Purple right before I was rear ended, and it was even quieter, the car revved smoother, and it felt like it had more power. I'd be interested to know if anyone here has tried that brand in their Mercedes.

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1975 W115 240D
1981 W123 240D
1984 W123 300D
1996 W202 C220