u/Due_Championship2555

Did a full cooling system refresh on my E36 and put together a proper step-by-step video.
Changed the usual bits:
Water pump
Thermostat
Radiator
Coolant + oil & filter
Tried to keep it practical — what actually needs doing, what you can skip, and a few things that caught me out while doing it.
If you’re planning this job, it might save you some time.