Mass Air Flow Meter

Given that this is a Kompressor or super charged engine I'd suspect the oil comes from the Kompressor and that problem must be fixed before anything is done about the MAFM, otherwise a new MAFM will quickly be ruined as well.

There's little downside risk to cleaning a MAFM for the alternative is to replace it. Cleaning means very very carefully wiping out the oil NEVER touching the hot wire element. Suggest using a spray designed to clean electronic components and don't expect success, but it may work.

Suggest you shop for the MAFM on line to save up to 40% of dealer price.

Thanks, that's roughly what I figured.

It looks like the damaged hose is designed to restrict the oil from passing into and through the Kompressor so we'll see whether or not this works before moving on. Apparently there was a mod from MB regarding this.

You've spotted my logic for the MAFM, since I need a new one anyway there's really no risk at all in cleaning the old one. I wasn't sure about the expected success rate, now I'm sure I shouldn't be sure about it but I guess nothing ventured etc.

I have some spray as you suggest, I'll give it a try after the oil is fixed. Thanks for your help.