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      09-02-2012, 05:19 PM   #12
Lieutenant Colonel

Drives: 2015, 740 LdX, Alpine White
Join Date: Mar 2011
Location: Boston Area

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Originally Posted by E92LNGCGY
Is it harmful to wash the engine bay using a pressure washer? I have always been told this is a big no no.
Treat it like you are caring for the interior of your car. Do not needlessly spray water in the engine compartment any more than you would spray water inside in the car on the cluster.

Wet your rag with water and wipe.

Spraying water inside the engine bay does not clean it any better then just spraying water on the exterior. You need to carefully wipe it.

Plus, just spraying water is going to move contaminants from one area to another less protected area.