This structure is greatly beneficial to keep the tank structure intact, otherwise it can bloom.

Regarding the silica pack, if you use a tank with a silica pack, please do not use any generic coolant, you need the lightly silicated G-05 only, if you add a life long type coolant, you will be quite cross to see your coolant start to get milky and thick.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)