I have Haldex 3 but the white plastic filter on the pump is pretty much identical to Haldex 5.
I have always used Brake cleaner on the pump filter and it is very effective at blasting the rubbish out and leaving everything spotless.
Works well for me but ultimately it's your choice BUT it must be cleaned.👍
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2007 Volvo XC90 D5 SE Geartronic
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