For owners of the 2009 Mercedes Benz CLS550 with the powerful 5.5L V8 engine (code 273.960 S), following the correct oil change process isn’t just maintenance—it’s vital protection for your high-performance vehicle. This model’s engine is engineered for precision and, without regular and proper oil changes, you risk premature wear and costly repairs. Whether you’re a seasoned Mercedes enthusiast or a new CLS550 owner, this step-by-step oil change guide will give you the exact specifications, answer the most common questions, and explain why your next service should be at Costa Oil. Ready to keep your Mercedes running perfectly? Find a Costa Oil near you for a quick, quality oil change today.

What Oil Does a 2009 Mercedes Benz CLS550 Take?

Choosing the correct oil for your 2009 Mercedes Benz CLS550 oil change is critical for optimal engine protection, especially due to the sophisticated 5.5L V8. Mercedes-Benz recommends full synthetic oil for maximum performance and longevity. The manufacturer specifies several viscosity grades depending on climate and driving conditions:

• 0W-40 (All temperatures): The most common and safest option, ideal for year-round use thanks to superior cold start and high-temp protection.
• 5W-40 (Above -25°C): Designed for warmer climates or areas where temperatures rarely dip below -25°C.
• 0W-20, 0W-30, 5W-30: These lighter viscosities may be recommended in extremely cold regions for easier starts and reduced engine drag.

Mercedes-Benz chooses these synthetic grades to ensure rapid oil flow at startup, protection under high loads, and clean operation. Always use oils meeting MB 229.5 or MB-approved specs for your CLS550.

2009 Mercedes Benz CLS550 Oil Capacity

The 2009 Mercedes Benz CLS550 holds an impressive 9 quarts (8.5 liters) of engine oil. This generous oil capacity is designed to dissipate heat efficiently and extend oil life in the advanced V8 engine.

Oil change tip: Always check your oil dipstick after filling to confirm proper level. Overfilling beyond the max can cause excessive pressure, potentially damaging engine seals and increasing oil burn-off. Underfilling can starve moving parts—regularly monitoring oil level is essential for engine health.

How Often Should You Change the Oil on a 2009 Mercedes Benz CLS550?

The best oil change interval for the 2009 Mercedes Benz CLS550 is every 10,000 miles or 12 months—whichever comes first—when using approved synthetic oils. Mercedes recommends synthetic oil exclusively, as conventional oil does not meet the required protection or longevity for modern V8 engines.

If you frequently drive in severe conditions (short trips, heavy traffic, towing, or extreme temperatures), consider changing oil every 5,000-7,500 miles to safeguard your engine. Look for these early warning signs, detailed below, that it may be time for a service before the scheduled interval.

Oil Filter for the 2009 Mercedes Benz CLS550

The oil filter on your Mercedes CLS550 is your engine’s first line of defense against contaminants that can wear critical components. A quality filter removes harmful debris and ensures smooth lubrication. Always use a filter meeting or exceeding OEM specs.

• Costa Oil filter part number: CCF5277 — engineered specifically for Mercedes engines to trap more particles than generic brands and maintain consistent oil flow.
• OEM-spec vs. generic: Genuine or premium aftermarket oil filters prevent bypass and fit perfectly, unlike generic or ill-fitting alternatives that risk leaks or reduced protection.

For peak performance, always trust a matched filter like the Costa Oil CCF5277 with your CLS550’s oil change.

Step-by-Step: What Happens During a Costa Oil Change

1. Pull into Costa Oil: No appointment needed—just drive to your nearest Costa Oil shop and stay comfortably in your car.
2. Drain the old oil: Our trained technician safely removes all old engine oil to prevent contamination with the fresh fill.
3. New filter installation: We install a premium CCF5277 oil filter to OEM specifications.
4. Add correct oil: The engine is filled with up to 9 quarts of synthetic oil, matching Mercedes requirements and the correct viscosity for your region.
5. Final check: The tech checks the dipstick and reset oil life monitor, ensuring the oil is at the perfect level and your Mercedes is ready for the road.
6. 10-minute turnaround: In less than 10 minutes, you’ll be back on your way—total convenience, no hassle. Find your nearest Costa Oil location to experience the difference today.

Signs Your 2009 Mercedes Benz CLS550 Needs an Oil Change

• Engine oil warning light: Illuminates when oil pressure drops or oil life is low. Prompt attention protects engine components.
• Louder engine noise or ticking: Increased friction from worn or dirty oil can cause abnormal engine sounds.
• Dark, gritty oil on dipstick: Healthy synthetic oil is amber; if yours is dark or contains particles, it’s time to change.
• Burning oil smell: Indicates oil may be leaking or breaking down and not lubricating properly.
• Unexplained drop in performance: Sluggish acceleration or rough idling can signal oil breakdown affecting engine efficiency.

Why Costa Oil for Your Mercedes Benz CLS550?

Costa Oil delivers the most convenient, expert oil change for your 2009 Mercedes Benz CLS550—no appointment needed, and done in just 10 minutes. Enjoy full synthetic oil and an OEM-spec filter for just $50. Our trained technicians know your Mercedes, use only the right motor oil viscosity, and install top-quality filters like CCF5277 for maximum protection. Plus, you stay in your vehicle throughout the service for total comfort and control.

Ready for quick, affordable luxury car maintenance? Schedule your oil change at Costa Oil today and enjoy peace of mind for your CLS550.

Frequently Asked Questions

How much does a 2009 Mercedes Benz CLS550 oil change cost?

At Costa Oil, a full synthetic oil change with OEM-spec filter for your 2009 Mercedes Benz CLS550 costs only $50—no extra fees, no appointment necessary.

Can I use 5W-40 or 0W-30 oil in my 2009 CLS550?

Yes, Mercedes-Benz approves 5W-40 for temps above -25°C, and 0W-30 for very cold climates. Always choose MB-approved synthetic oils in any recommended viscosity grade.

How do I know if my CLS550 is low on oil?

Check the dipstick often. If the oil level is at or below the minimum mark, add oil immediately and get an oil change if it’s dark or dirty.

Does Costa Oil replace filters during my CLS550 oil change?

Absolutely. Every Costa Oil change includes a premium CCF5277 oil filter for the CLS550, plus options for air and cabin filters like the Costa Oil Air Filter and Costa Oil Cabin Air Filter if needed.