Questions you thought were too dumb to ask E53 edition

[THE VEIN]

i've been seeing more and more posts around here telling people to search when they ask questions. well, in response to that, i'm starting a type of thread that existed in every section of audizine back when i had my Audi

This whole thread is dedicated to questions about your E53 X5 you simply thought were too dumb to ask. so here is the place to feel free to ask anything you want about your car. there is no question too dumb. I know not all questions are deserving of starting a new thread so if you read on here and see a question you know the answer to, go ahead and answer it, even if that means posting a link to another thread. sometimes searching just doesn't pull up information that really offers good answers, and straight up asking someone else ends up being better in the long run. may it be a wealth of information for us all.

I'll go first... If I'm topping off my coolant, do I need to bleed the system every time or just fill up and go?