Merc63

Anyome have an oil analysis so I can compare?

Around 7500km or so.
M1 formula M 5w40

Iron 52
Silicone 21
Aluminum 10
Phosphorus 900
Zinc 1100
100c viscosity 12.8
Base number 1.7 (new is 8)

Merc63

Crazy they do services (oil change) at 15,000km here lol

bhamg

I'd say iron is quite a bit higher and TBN much lower than I'd expect at that oil mileage. Re. the silicon - are you using aftermarket or OE air filters?

Even Money

Here's one I did.

https://mbworld.org/forums/c63-amg-w204/347598-oil-analysis-10-300-mi.html#post4040953

CELLryuu

i dont have anything technical to ad but on my last c63, i changed the oil at 2000 and the oil looked like new. i have 6000 on my current one and im not worried. ill just do service A at 10000 like they recommend.

Merc63

Ya kn filters.

One track day in there too.

Another guy had similar numbers mort I think..

bhamg

I don't know what the rest of the wear metals look like but if it were my decision I'd dump the KN's. They're the logical culprit for the high Si and Fe numbers. The low TBN is scary...a month or two of short haul Canadian winter driving and that oil fill would have no acid-neutralizing capability whatsoever. Based on TBN alone I think the M1 0W-40 would be a better alternative for your driving.