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I just called ZF USA in IL. and spoke with a technician there regarding this very issue. Just a note: I actually called them prior to reading this thread as I was contemplating doing a tranny fluid change and wanted to get the manufacturers recommendation first.
His recommendation regarding this topic (at my 75k mileage) was "the transmission should be serviced". I asked him about BMW's Lifetime fluid statement and he said it's more about BMW's "Maintenence Free" marketing than anything else. He said if the fluid is not discolored and does not smell burnt or has excessive sediment then there is no harm in a drain/filter/and re-fill. He did recommend staying with Esso(Mobil) 71141 or ZF Lifeguard #5
He said if the fluid is dark and smells, then there are other issues with the transmission going on.
Just thought I'd pass this on....
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03' X5 4.4i Black Sapphire/Black
04' Land Rover Range Rover HSE
95' Jeep GC Ltd
Last edited by bsprtsgrp; 12-01-2011 at 05:17 PM.
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12-01-2011, 04:57 PM
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