The 2020 GLC 300 typically requires synthetic engine oil that meets Mercedes-Benz MB 229.5 (and MB 229.51) specifications, with a common viscosity of 0W-40.
The 2020 GLC 300 uses a modern turbocharged engine that relies on a high-spec, long-life oil. The exact grade can vary by climate and service interval, so consult the owner’s manual, the engine oil cap, or a Mercedes-Benz dealer to confirm the precise requirement for your vehicle. This article outlines the oil type, recommended viscosity, and practical tips for ensuring you use the correct oil.
Oil type and Mercedes specifications
Mercedes-Benz specifies synthetic oil that carries the MB 229.5 (and MB 229.51) approval for gasoline engines like the GLC 300. Oils with these approvals are designed for long-drain intervals and robust high-temperature protection.
What MB 229.5/229.51 means
MB 229.5 and MB 229.51 are official Mercedes-Benz engine oil specifications that certify the oil meets performance standards for modern engines, including lubrication efficiency, wear protection, and compatibility with longer service intervals. Always verify that the product label or the vehicle’s manual lists one of these approvals.
Before you decide, use only oils that advertise MB 229.5 (or 229.51) approval and factor in climate and service interval. The following key points summarize the requirements:
- Full synthetic motor oil
- Viscosity commonly 0W-40; 5W-40 is acceptable in some markets if 0W-40 is unavailable
- Mercedes-Benz approval MB 229.5 (or MB 229.51)
In practice, using a synthetic oil with MB 229.5/229.51 approval and a 0W-40 viscosity is the standard approach for the 2020 GLC 300, though local availability may lead to 5W-40 in some regions. Always confirm with the manual or the engine cap.
Viscosity guidance by climate and service
Oil viscosity choices are influenced by climate and the intended service interval. Here is a practical guide for the 2020 GLC 300.
- 0W-40 is the typical recommendation for most climates and service schedules, offering strong cold-start protection and robust hot-running performance.
- 5W-40 can be used where 0W-40 is not available, provided the oil still carries MB 229.5/229.51 approval.
In all cases, verify the specification in the owner’s manual and on the engine oil cap. The MB standard governs the oil choice, with climate-specific adjustments allowed within that framework.
How to verify and maintain the correct oil
To ensure you’re using the correct oil for your 2020 GLC 300, follow these steps and maintenance practices.
- Consult the owner’s manual or the vehicle’s oil section to confirm the approved viscosity and MB spec (typically 0W-40 and MB 229.5/229.51).
- Check the engine oil cap for the recommended grade and MB approval when performing a quick check.
- Choose a reputable synthetic oil that explicitly states MB 229.5 (or 229.51) approval and a viscosity of 0W-40 (or 5W-40 if applicable).
Regular oil changes using the correct specification help protect the turbocharged engine and maintain warranty compliance. If in doubt, consult a Mercedes-Benz dealer or a certified service technician.
Summary
The 2020 GLC 300 typically uses full synthetic oil with MB 229.5 (or 229.51) approval and a viscosity around 0W-40, with 5W-40 as a possible alternative in some markets. Always verify the exact requirement via the owner’s manual, the oil cap, or a dealership, especially when climate or service intervals differ. Adhering to the MB spec ensures proper lubrication, performance, and warranty protection.
What type of oil does the Mercedes GLC 300 use?
Engine Oil
0W-20 (All TEMPS) - Use only 0W-20. Capacity: 5.6 quarts (with filter). After refill check oil level.
Is 0W-30 good for Mercedes-Benz?
For a Mercedes-Benz C-Class, a full synthetic with a viscosity of 0W-30, 0W-40, or 5W-40 is usually best.
What type of oil does a 2020 Mercedes GLC 300 take?
When performing DIY maintenance on GLC models, Mercedes recommends using a fully synthetic oil for its vehicles. For your GLC 300, you will need 6.3 quarts of a high quality synthetic oil designed for newer European cars, such as Mobil 1 ESP® X2 0W-20.
How much oil does a GLC 300 take?
approximately 6.5 to 6.9 quarts
Most Mercedes-Benz GLC 300 models have an oil capacity of approximately 6.5 to 6.9 quarts, including the filter. AMG® models may require more due to their high-performance systems.