PeachParts Mercedes-Benz Forum - View Single Post - Any ideas on improving w210 fuel economy?

F18 · #11 03-25-2008, 11:47 PM

Alot of good suggestions....tire pressure, speed & throttle moderation.....
There is no throttle body so air intake flow is at full throttle on a diesel all the time....so clean air filter and a clean Intake manifold will help engine performance and mileage......diesels need a ton of air. If you have never pulled the IM off.....do that job when time allows. You will be supprised at how much oily carbon gunk builds up in the intake manifold, EGR and intake ports on the head. The last time I pulled and cleaned mine the diameters of the openings were reduced by about 10% to 15% restricting air flow. Not good if your trying to stretch a gallon!