The 2017 Mercedes C300 uses a fully synthetic motor oil that meets Mercedes‑Benz specification MB 229.5 or MB 229.51, typically in 0W-40 (0W-40) with a capacity of about 6 quarts (roughly 5.7 liters) including the filter.
For the 2017 C300 (W205, equipped with the 2.0L turbocharged engine), Mercedes-Benz specifies a high‑quality synthetic oil that complies with their long‑life standards. Exact grade and capacity can vary by market, engine variant, and climate, so it’s best to confirm with the owner's manual or a Mercedes-Benz dealer. The information below provides a practical guide to the common requirements and what to look for when purchasing oil for this model.
Oil specifications
Before listing specifics, note that the exact MB approval and viscosity can vary by market and optional equipment. The following are commonly applicable for the 2017 C300 and are good starting points to verify against your manual:
- Oil specification: MB 229.5 (Long-Life IV) for gasoline engines; MB 229.51 is used for certain newer configurations or extended drain programs. Both are accepted for many 2017 C300 variants depending on market and engine code.
- Viscosity: 0W-40 is the typical recommended grade; 5W-40 may be acceptable in warmer climates or as specified by the manual.
- Oil type: Fully synthetic motor oil that explicitly meets MB 229.5 or MB 229.51 requirements.
In practice, this means choosing a high‑quality synthetic oil that carries the MB 229.5/229.51 approval and selecting a 0W-40 or 5W-40 viscosity based on climate and the manual’s guidance.
Oil capacity and service notes
Knowing how much oil your C300 holds helps with planning an oil change. The following details are commonly relevant for a 2017 C300:
- Oil capacity (including the filter): approximately 6.0 quarts (about 5.7 liters).
- Oil filter: Replace the filter with every oil change to ensure proper filtration and compatibility with the fresh oil.
- Change interval: Mercedes‑Benz typically schedules oil-service intervals up to 10,000–15,000 miles (16,000–24,000 km) or 12 months, depending on driving conditions and the specific MB 229.5/229.51 program installed on the vehicle.
Concluding: Use a MB‑approved fully synthetic oil in the correct viscosity range and follow the maker’s service intervals to maintain performance and warranty coverage.
Practical tips for choosing oil
To ensure you select the right product, consider these practical steps:
- Check the owner's manual or contact a Mercedes-Benz dealer to confirm the exact MB specification and viscosity for your engine code and market.
- Purchase oil that clearly states MB 229.5 or MB 229.51 compliance on the label.
- Avoid mineral oils or non‑MB‑approved blends, as they may not meet warranty or long‑term engine protection standards.
Concluding: When in doubt, pick a reputable synthetic oil that carries MB 229.5/229.51 approval and adhere to the manual’s viscosity and capacity recommendations.
Summary
For a 2017 Mercedes C300, the recommended oil is a fully synthetic motor oil that meets MB 229.5 or MB 229.51, typically in 0W-40 (or 5W-40 in certain conditions), with an oil capacity around 6 quarts. Always verify the exact specification and capacity in the owner's manual or with a Mercedes‑Benz dealer, and follow the prescribed service intervals to optimize engine health and warranty coverage.