What's the mercedes glk 350 oil type?

The Mercedes GLK 350'S3.5 L V6 engine preferS7 US quarts of 5W-30. Oil and filter changes should be scheduled every 7,500-10,000 miles or 12 months if using fully synthetic lubricants, or every 3,000-5,000 miles or 6 months, if using conventional oil. The advantages of using synthetic vs conventional products include better lubrication among moving parts, a longer interval between service appointments and enhanced effectiveness under adverse weather conditions. A motor oil with a thinner viscosity moves more easily in colder temperatures, coating engine components efficiently and providing better protection against friction and corrosion. Cost for a lube and filter job for the GLK ranges between $170-$200 in parts and labor.