2010 2011 BMW 5 Series Forum F10 - View Single Post

Matt01 · 11-21-2012, 02:51 PM

I think it's the particulate filter, it's cleaned out by heat and the engine deliberately running hot... It can increase the mpg by always running... Particularly if you're doing lots of short runs...

11-21-2012, 02:51 PM	#3
Matt01 Private First Class Drives: F20 125d MSport Join Date: Jan 2011 Location: Nottingham Posts: 118 iTrader: (0)	I think it's the particulate filter, it's cleaned out by heat and the engine deliberately running hot... It can increase the mpg by always running... Particularly if you're doing lots of short runs...