ML350 Oil & Filter Change Guide

Your Guide to a 2013 Mercedes-Benz ML350 Oil and Filter Change

Maintaining your 2013 Mercedes-Benz ML350 is crucial for its longevity and performance. One of the most fundamental and impactful maintenance tasks you can perform is a regular oil and oil filter change. While many owners opt for professional servicing, understanding the process can empower you to tackle this yourself, saving money and gaining valuable insight into your vehicle's health. This comprehensive guide will walk you through everything you need to know, from selecting the correct oil and filter to the step-by-step procedure.

Why Regular Oil Changes Matter

Engine oil is the lifeblood of your ML350. It lubricates moving parts, reduces friction, dissipates heat, cleans the engine by carrying away contaminants, and prevents corrosion. Over time and with mileage, oil degrades. It loses its viscosity, becomes contaminated with dirt, metal shavings, and combustion by-products. This degraded oil can no longer perform its essential functions effectively, leading to increased engine wear, reduced fuel efficiency, and potentially catastrophic engine damage. Regular oil and filter changes ensure your engine is always protected by clean, fresh lubricant.

Choosing the Right Oil for Your ML350

The question of which oil to use is paramount. For modern vehicles like your 2013 Mercedes-Benz ML350, synthetic oil is often the recommended choice, and in many cases, a requirement. Synthetic oils are engineered at a molecular level, offering superior performance compared to conventional oils. They resist thermal breakdown, maintain their viscosity across a wider temperature range, and often allow for longer service intervals.

Your owner's manual is the definitive source for your ML350's specific oil requirements. It will specify the recommended viscosity grade, such as 0W-20, 0W-30, 5W-20, 5W-30, or 10W-30. It will also likely specify a Mercedes-Benz (MB) approval number. It is vital to use an oil that meets these specifications. Using an oil that doesn't meet the MB approval can void your warranty and potentially harm your engine.

Synthetic vs. Conventional Oil: A Closer Look

The debate between synthetic and conventional oil often centres on performance and longevity. While conventional oil can be adequate if changed frequently and approved for your vehicle, synthetic oil offers distinct advantages:

For your ML350, especially if you plan to keep it for many years, investing in 100% synthetic oil that meets the MB specifications is a wise decision.

Selecting the Correct Oil Filter

Just as important as the oil is the oil filter. The oil filter removes harmful contaminants from the oil. Over time, the filter becomes saturated and less effective. You'll need a replacement oil filter specifically designed for your 2013 Mercedes-Benz ML350. Reputable brands like K&N offer high-quality filters designed for excellent filtration and high oil flow rates, compatible with both synthetic and conventional oils. Always ensure the filter you purchase is listed as compatible with your specific model year and engine.

Essential Tools and Supplies

Before you begin, gather all the necessary tools and supplies:

• New oil filter (specific to your ML350)
• New engine oil (correct type and quantity as per your owner's manual)
• Oil filter wrench (a strap wrench or a Mercedes-Benz ML350 specific filter wrench might be needed)
• Socket wrench set (for the drain plug)
• Drain pan (large enough to hold all the old oil)
• Funnel
• Rags or shop towels
• Gloves (nitrile or mechanic's gloves)
• Safety glasses
• Jack and jack stands (if needed for clearance)
• Wheel chocks
• Torque wrench (recommended for the drain plug)

Safety First: Protecting Yourself

Working on a vehicle always carries inherent risks. Prioritise your safety:

• Wear safety glasses: Engine bays can harbour unexpected drips of battery acid, coolant, brake fluid, or other corrosive substances that can cause serious eye damage.
• Use jack stands: If you need to lift your ML350 for better access, never rely solely on a jack. Use properly rated jack stands placed on a stable, level surface. Ensure the vehicle is securely supported before getting underneath.
• Engage the parking brake and use wheel chocks: This prevents the vehicle from rolling.
• Allow the engine to cool: Hot engine oil can cause severe burns. Let the engine cool down for at least 30 minutes before starting.

Step-by-Step Oil and Filter Change Procedure

1. Prepare the Vehicle

Park your ML350 on a level surface. Engage the parking brake and place wheel chocks behind the rear wheels. If you need more clearance, use your jack to lift the front of the vehicle and secure it with jack stands. Ensure the vehicle is stable before proceeding.

2. Locate the Oil Drain Plug and Filter

You'll need to get under the vehicle. The oil drain plug is typically located at the lowest point of the oil pan, which is usually towards the rear of the engine. The oil filter housing is also usually found on the underside of the engine, though its exact location can vary. Consult your owner's manual or a vehicle-specific repair manual if you have trouble locating these components.

3. Drain the Old Oil

Place your drain pan directly beneath the oil drain plug. Using the appropriate socket wrench, carefully loosen and remove the drain plug. Be prepared for the oil to flow out immediately. Allow the oil to drain completely. This can take several minutes. Once the flow has slowed to a drip, clean the drain plug and the area around the drain hole. Reinstall the drain plug and tighten it. It's best to use a torque wrench to tighten it to the manufacturer's specified torque to avoid stripping the threads or overtightening.

4. Remove the Old Oil Filter

Position the drain pan beneath the oil filter housing. For many Mercedes-Benz vehicles, you can often use an old serpentine belt wrapped around the filter to gain leverage and unscrew it by hand. If it's too tight, use your oil filter wrench. Once loosened, unscrew the filter. Be aware that some oil will likely spill out, so ensure your drain pan is positioned correctly. Clean the filter mounting surface on the engine to ensure a good seal with the new filter.

5. Install the New Oil Filter

Before installing the new filter, apply a thin film of new engine oil to the rubber gasket on the top of the new filter. This helps create a proper seal and prevents the gasket from sticking. Screw the new oil filter onto the engine by hand until the gasket makes contact with the mounting surface. Then, tighten it an additional three-quarters to one full turn by hand, or according to the filter manufacturer's instructions. Avoid using the filter wrench for installation unless specifically instructed, as overtightening can damage the filter or the mounting threads.

6. Add New Engine Oil

Locate the oil fill cap on the top of the engine. Remove the cap and insert your funnel. Refer to your owner's manual for the exact oil capacity of your ML350. Slowly pour the recommended amount of new, correct-grade synthetic oil into the engine. Start with slightly less than the full capacity.

7. Check the Oil Level

Once you've added the oil, replace the oil fill cap. Start the engine and let it run for a minute or two. This allows the new oil to circulate and fill the new oil filter. Turn off the engine and wait for a few minutes for the oil to settle back into the pan. Remove the dipstick, wipe it clean, reinsert it fully, and then pull it out again to check the oil level. The oil level should be between the minimum and maximum marks on the dipstick. Add more oil if necessary, checking the level frequently until it's correct. Do not overfill.

8. Final Checks and Clean-up

With the new oil in place, carefully inspect the drain plug and the oil filter housing for any leaks. If you lifted the vehicle, carefully lower it back to the ground. Dispose of the old oil and filter responsibly at an approved recycling centre. Clean up any spilled oil and put away your tools.

Common Questions About Oil Changes

Q: How often should I change the oil in my 2013 ML350?
A: Consult your owner's manual for the recommended service interval. For synthetic oil in a 2013 ML350, this is typically between 7,500 and 10,000 miles, or annually, whichever comes first. Driving conditions can influence this interval.

Q: What is the significance of MB approval for engine oil?
A: Mercedes-Benz approval signifies that the oil has met stringent performance and protection standards set by Mercedes-Benz, ensuring compatibility with your engine's specific materials and operating conditions.

Q: Can I use synthetic blend oil?
A: While some vehicles allow synthetic blends, it's best to stick to the manufacturer's recommendation. If your owner's manual specifies 100% synthetic, use that. A synthetic blend is a mix of synthetic and conventional oils and may not offer the same level of protection or longevity as full synthetic.

Q: What if I can't loosen the oil filter?
A: Ensure you are using the correct oil filter wrench. If it's still too tight, you might need a more robust filter wrench designed for stubborn filters. In some cases, gently tapping the filter with a hammer might help loosen it, but be careful not to puncture it.

Q: Is it true that modern engines running synthetics don't get gunk in the oil pan?
A: Yes, generally speaking. High-quality synthetic oils are highly resistant to breaking down into sludge or deposits. Furthermore, they are formulated to keep very fine wear particles suspended in the oil, preventing them from settling at the bottom of the oil pan. If significant deposits are found in an engine using proper synthetic oil and regular changes, it often indicates a more serious underlying issue or a lack of proper maintenance historically.

Performing a DIY oil and filter change on your 2013 Mercedes-Benz ML350 is a rewarding task that contributes significantly to the health of your luxury SUV. By following these steps and prioritising safety, you can ensure your ML350 continues to provide a smooth and reliable driving experience for years to come.

If you want to read more articles similar to ML350 Oil & Filter Change Guide, you can visit the Automotive category.