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S4 and Break-in
By and large, the recommended rev limits for "breaking" a motor in are just corporate CYA numbers.
A friend that built race motors once told me, if it won't run at 9,000 after 5 minutes on the dyno, it never will.
Big enemy of motors is running it hard and then shutting it down...without allowing it to reach good operating temps...then doing this over and over. If the oil is hot...run it hard.
I would be quite happy with the ill-broken-in S4...but I would rather have it after owner number 1 eats his $10k in depreciation:)