If what you have listed is all you have to throw at a new to you e53... Don't sweat it!

I got my 05 4.8iS Alpine White for 15k SAR (4k USD) and now my total (including purchase price) is 60k SAR (16k USD), but I routinely hit 200kph and drive it as hard as I can conditions permitting.

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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course