The Mercedes-Benz M116, M117, M119, and M120 engines represent a lineage of high-performance and durable V8 and V12 powerplants used in classic Mercedes models from the 1970s through the 1990s. While these engines are known for their reliability and smooth power delivery, regular oil and filter changes are crucial to maintaining their performance and longevity. As these engines age, old oil loses its lubricating properties, leading to increased wear on internal components. This guide provides a detailed, step-by-step process for changing the engine oil and filter in M116, M117, M119, and M120 engines, ensuring that your classic Mercedes continues to run at its best.
3.5 L M116.980 V8 (SL, SLC)
3.8 L M116.980 V8 (SL, SLC)
4.2 L M116.980 V8 (SL)
5.0 L M117.960 V8 (SL, SLC)
5.6 L M117.967 V8 (SL)
Specified SAE viscosity classes during continuous ambient temperatures
Following the SAE grades exactly according to the ambient air temperatures would result in frequent engine oil changes. The temperature ranges for the SAE grades should therefore be regarded as a guideline which may be exceeded for brief periods.
Oil Capacity in Liters
Toraue speclflcatlons (Nm)
Special tools
Removing Old Oil Filter
Engine 116, 117 in model 126
Engine 119 in models 124, 129, 140
Engine 120
Remove left air filter housing and mass air
flow sensor as an assembly (job no. 09-0015).
Removing Old Oil
NOTE: Change engine oil only with the engine at operating temperature.
Engine 116, 117 in model 126
Engine 119 in models 124, 129, 140
- Drain the oil filter before suctioning or draining the engine oil. For this purpose, loosen the center screw (1) and remove together with oil filter cover.
Engine 120 in model 140
- Before suctioning or draining engine oil, remove the threaded cover (2) using a 74 mm insert.
- Remove threaded cover (2) and oil filter cartridge (4).
All Engines
- Suction engine oil via an oil dipstick tube with the engine at operating temperature.
If no suction unit is available:
- Drain engine oil from the oil pan (arrow).
- On models 129 and 140, remove the engine compartment lower panel first and reinstall after
completing maintenance jobs (refer to job item 6190). - If the oil has been drained from the oil pan, replace the seal ring on the oil drain plug.
- Tighten the oil drain plug. Refer to the table for the correct torque.
installing new oil filter
Engine 116, 117 in model 107
- Unscrew the oil filter housing (3) and drain.
- Wash out oil filter housing and blow out.
- Check seal ring (2) and replace as necessary.
For this purpose, pull the compression spring with the spring washer (5) from the fastening screw (1). Be sure to properly install the compression spring with the spring washer during assembly.
- Replace the rubber seal ring (4).
- Install the oil filter lower part with a new filter element (6) and tighten the fastening screw (1) to 25 Nm.
Engine 116, 117 in model 126
Engine 119 in model 124, 129, 140
- Replace the filter element while making sure that the large rubber seal (24 mm ID) points in
downward direction.
Engine 116, 117 in model 126
- Replace the rubber seal ring (1) on the cover.
- Check seal ring (2) on center screw and replace as necessary.
- Tighten center screw to 25 Nm.
Engine Oil and Filter Change
Engine 119 in model 124, 129, 140
Replace rubber seal rings (4 and 4a) on the cover.
- Tighten the center screw to 20 Nm.
Engine 120 in model 140
- Replace seal (3).
- Insert oil filter cartridge (4) in threaded cover (2).
- Insert the cartridge with the cover and tighten it.
- Install left air filter housing and mass air flow sensor assembly.
Filling engine oil – All engines
- Add engine oil (arrow).
- Run the engine and check for leaks.
- Check the oil level with the engine at operating temperature approx. 2 minutes after stopping the engine (arrow).
- Install air duct (engines 116, and 117 in model
126, engine 119 in models 124, 129, 140).
Proper maintenance of the Mercedes-Benz M116, M117, M119, and M120 engines requires regular oil and filter changes to prevent wear and ensure smooth performance. Given their classic status, using high-quality oil and filters is essential to maintain lubrication and protect internal components. The process involves draining the old oil, replacing the filter, refilling it with the recommended oil, and checking for leaks. Proper disposal of used oil and filters is also necessary. With routine care, these iconic V8 and V12 engines can continue to deliver reliable performance for years to come.
