168 Service and maintenanceThe service display, located in theDriver Information Centre, indicateswhen the next service is due. Seekthe assistance of a workshop.Service display 3 75.Engine oil lever monitor 3 74.Recommended fluids,lubricants and partsRecommended fluids andlubricantsOnly use products that meet therecommended specifications.Damage resulting from the use ofproducts not in line with thesespecifications will not be covered bythe warranty.9 WarningOperating materials arehazardous and could bepoisonous. Handle with care. Payattention to information given onthe containers.Engine oilEngine oil is identified by its qualityand its viscosity. Quality is moreimportant than viscosity whenselecting which engine oil to use. Theoil quality ensures e.g. enginecleanliness, wear protection and oilaging control, whereas viscositygrade gives information on the oil'sthickness over a temperature range.Dexos is the newest engine oil qualitythat provides optimum protection fordiesel engines. If it is unavailable,engine oils of other listed qualitieshave to be used.Select the appropriate engine oilbased on its quality and on theminimum ambient temperature3 173.Topping up engine oilEngine oils of different manufacturersand brands can be mixed as long asthey comply with the required engineoil quality and viscosity.Use of engine oil with onlyACEA A1/B1 or only A5/B5 quality isprohibited, since it can cause long-term engine damage under certainoperating conditions.Select the appropriate engine oilbased on its quality and on theminimum ambient temperature3 173.
