Selecting and replacing engine oil (Mercedes-Benz Sprinter 903)

When purchasing oil, you must follow two basic rules.

Oil quality: Mercedes has its own lubricant research laboratory, where all brands of oil sold are regularly tested. If the sample being tested meets all the requirements, it is added to the list of those acceptable for use. This list is quite long; for information, please contact the company service center. There are several systems for designating oil quality. Along with the common designation of the American Petroleum Institute (API), there is also the classification of the Association of European Automobile Manufacturers (ACEA), the American military (MIL) and some others.

For reference: all motor oils specified in the specification sheets No. 226.0 can be used; 226.1; 227.0; 227.1; 228.0 and 228.1.

The viscosity of the oil determines whether the starter will be able to start a cold engine, whether all lubrication points will be supplied with oil immediately after starting, and how well the oil film is preserved at high temperatures and speeds. The American Society of Automotive Engineers (SAE) has introduced the following classification of oil by viscosity: from winter low-viscosity SAE 5W, 10W, 15W, then intermediate SAE 20W/20 to viscous summer oil SAE 30, 40 and 50. Thus, motor oil SAE 15W50 at a temperature of -15°C corresponds to viscosity class 15W, and at a temperature of 100°C - to class 50W. A characteristic feature of all-season oils is a decrease in their resistance to high temperatures over time. For this reason, all-season oils of classes SAE 10W30 and 5W20 are not recommended for use in warm weather.

There are special oils for diesel engines. Here too, it is necessary to adhere to the company's recommendations.