Magnificent Merc and two top independent garages

We have corresponded before regarding mass-air-flow (MAF) cleaning, by revving the engine up to 2,500rpm and switching off the engine, although it was at least a couple of years ago. I am still running my Mercedes-Benz C 250 Turbodiesel Estate (delivered new in February 1997, and now past the 250,000 mile mark). It is running […]