How to Change M177 Engine Oil in C63

Why Proper Maintenance = Longer Tune Life

- Factory-fill oil often shears faster under tuned boost levels.
  - 6,500 stock and 5,000 tuned mile oil change interval (OCI) is recommended.
  - High-demand you may want to change even sooner.

A clean lubrication system keeps hydraulic lifters and timing gears quiet.
The M177 TunedMercedes calibration maintains OEM heuristics for protection and load-based limits to help at warm-up and high oil temperatures.

Tuner’s recommendation — M177 Custom Calibration

Tuner’s note: If your C63 runs on the M177 platform, regular oil service is your best defense against timing-chain stretch and turbo wear — especially once tuned
Want to unlock the smoothest, most reliable power band for your daily or track setup? [View the M177 Custom Tune →]
Typical gains: +69 whp (91, 93 & Ethanol Blends). Designed for reliability — factory-safe startup and full OEM cold protection.

Get your custom tune →

Required

Socket Set Including 8mm-24mm

Use this set or similar for sockets needed for oil change on m177. You will need a 8mm, 13mm, and 24mm six point metric sockets.

M177 Oil Filter

A nice oil filter, such as the Mann 6008 Z, that can be used in some M177 C63 applications. The OEM Filter may be part number A2781800009.

9L of 5W-40 Oil

A nice 5W-40 M229.5 Spec Oil like Liquid Moly for M177 C63 applications. Mobil 1 5W-40 is also approved. Some people use 0W-40.

Step By Step

Remove skid plate 13mm
Remove rear engine guard 8mm
Remove oil drain (coin/flat head)
Oil filter housing 24mm
Remove and replace filter cartridge then replace housing with 22 pound feet of torque
Screw drain plug in until it clicks (visual)
Add 9 Liters of Oil 5w-40 or 0-40.
Reset Service Indicator Light by holding ok and telephone button then going to assyst plus then, service, the confirm service.

Common questions

Can I tune before changing oil?

Yes. We recommend tuning after a fresh service including spark plugs and coils, but our calibrations include OEM oil-temperature heuristic safeguards either way.

Do you adjust oil-temperature maps?

We preserve OEM warm-up and add optimized fan logic earlier under sustained boost, and we do respect some OEM temperature limits which make sense to preserve long-term engine health. If you are running into these limits on successive pulls cooling upgrades are recommended.

Does tuning affect oil life?

Slightly when accessing increased boost and torque limits. Aggressive use or E blends shorten oil life slightly — we recommend 5,000 mile OCI.