My friends 'god-car' had trouble reaching 140km/h during the first few days. By the 2nd week he was touching 160km/h and more and he is going for his oil change at 5k km. I guess difference in mechanics have different philosophies. Considering he's always driving that fast, I told that bugger to swap it at 1k or 2k km max.Didnt get to go 150kmh yet but i did 140+ yesterday. So far already passed 500km.
You on the other hand - I don't know how you drive so can't comment. But whatever the case, remember you now have floating shards of metal in your oil so with that in mind, just be wary of how you drive your car and quickly get to your oil change mark