F30 320d EGR valve cleaning - how often should you do it?
My mechanic recommended cleaning the EGR valve on my 2015 F30 320d at the last service. He said its getting carboned up and could cause issues if left.
The car has 110k km and runs fine, no warning lights or anything. Is EGR cleaning something you should do preventatively or only when theres a problem?
Also is it worth getting an EGR delete instead? I know its not legal everywhere but curious about the benefits.
