Submariner1
Senior Member
- Joined
- Sep 3, 2016
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- Your Mercedes
- CL500 2009 5.5
The 20k/ 2 years thing came out in the US directly from Pentosin themselves. Sure it’s going to be skewed for sales but remember:
Oil has a chronological lifetime as well as a performance one.
ABC fluid sees a lot more abuse than brake fluid does.
Does make sense, what puzzles me is that MB still say its not necessary :-/
Mind you I guess most cars make it through the 3 years warranty period.