Aside from engine fluids..... 4 wheel snow tires and 50 lb. bag of sand over the axle in the trunk will make your MB diesel into the finest snow car you have ever known. I also like to carry a towing strap in my 4-spd 240D during winter months for helping to pull 4x4's and SUV's out of ditches..... low end torque on the diesel engine is truly amazing.