Quote:
Originally Posted by castlesteve
im not sure why you would need to change intercooler fluid unless perhaps way over 100k.
I get gearbox and center diff fluids as well... but again, 80k miles or more. Having had a couple of these X5s and an X3. The only issue I had was a first gen X3 center diff wearing out the plastic gear.
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Just like all fluids in your vehicles, there not lifetime fluids. They all need to be changed at some point. The intercooler fluids is the same as your engine coolant, I change mine every four years.
As yourself this, why would you change your engine coolant and not your charge air fluids. I know the the charge air is a closed loop system, but no fluid last forever.