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Old 02-05-2019, 09:05 AM
Dash Riprock Dash Riprock is offline
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Location: Calgary
 
Join Date: Nov 2014
Posts: 55
Mein Auto: 2012 X5 35d
I am far from a mechanic, but the benefit would be to reduce the amount of cold air entering the engine, allowing engine to heat up sooner and maintain a proper engine temperature. I can say we always did with with my dad's 1988 6.2L diesel, with my 1997 Toyota Celica my 2006 Honda Odyssey. I haven't had enough experience with the BMW X5 35D to know how it responds in frigid temperatures, no temp gauge so I haven't always paid attention to temp (i.e. access hidden menu to watch temps). If you haven't experienced -30C before you would have no idea how cold it is.
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