Call it overkill but I personally don't or won't let a high performance AMG engine go beyond 8k with engine oil service. Or yearly. I doubt I would ever do the 12.5 k in an AMG per year anyhow. These cars do get got when driven as that's there purpose to be a performance car. But I have my current car changed around 5/6k. Overkill to some but I personally think it prolongs engine/components.Why not?