What oil does a 1982 Mercedes Benz 300CD take?
The 1982 Mercedes Benz 300CD with the 3.0L 5-cylinder diesel turbo engine requires an oil capacity of 7.9 quarts when changing with a filter. Recommended viscosities include 0W-30 or 0W-40 for all temperatures, 10W-40 for temperatures above -20°C, and 5W-30, 5W-40, or 5W-50 for temperatures above -25°C. AMSOIL recommends EFMQT-EA or EFMQT-EA
Transmission & Drive Fluids
| Product Name | Code |
|---|---|
| AMSOIL Signature Series Multi-Vehicle 100% Synthetic ATF | ATFPK-EA |
| AMSOIL OE Multi-Vehicle 100% Synthetic ATF | OTFQT-EA |
| AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid | PSFCN-EA |
Coolant & Brake Fluids
| Product Name | Code |
|---|---|
| AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
| AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid | BFLVCN-EA |
Fuel Maintenance
| Product Name | Code |
|---|---|
| AMSOIL Diesel Injector Clean Fuel Additive | ADFPCN-EA |
Engine Oil Specifications & Details
For the 3.0L 5-cylinder diesel turbo engine, maintaining correct viscosity is essential for temperature management and component protection.
Oil Viscosity Selection
| Temperature Range | Recommended Viscosity |
|---|---|
| All Temperatures | 0W-30, 0W-40 |
| Above -20°C | 10W-40 |
| Above -25°C | 5W-30, 5W-40, 5W-50 |
AMSOIL lookup oil grade: SEO41
Oil Capacity & Service Data
| Component | Capacity / Specification |
|---|---|
| Engine Oil Capacity | 7.9 quarts (with filter) |
| Oil Drain Plug Torque | 20 ft/lbs |
| Oil Filter | No recommendations available |
| Air Filter | No recommendations available |
Note: On models with an oil cooler, additional oil may be needed when the cooler is drained. Allow 5 minutes after refilling or turning the engine off before checking the oil level.
Coolant Specifications
| Component | Capacity / Detail |
|---|---|
| Coolant Capacity | 13.2 quarts |
Transmission & Differential Data
Automatic Transmission
This vehicle utilizes the 4-speed 722.3 automatic transmission.
| Fill Type | Capacity |
|---|---|
| Total Fill | 6.4 quarts |
| Initial Fill | 5.1 quarts |
Differential
| Component | Capacity |
|---|---|
| Rear Differential | 2.3 pints |
Diesel maintenance notes for this vehicle
- Cooling System: Prioritize cooling system health to prevent overheating in the OM617 engine family.
- Fuel Integrity: Maintain fuel system cleanliness. While the OM617 is known for compatibility with alternative fuels like biodiesel, improper processing can lead to engine damage over time.
- Turbocharger: As this is a turbodiesel variant, regular turbocharger inspection is recommended.
- Oil Level Check: Always allow 5 minutes after refilling or turning the engine off before checking the oil level for accuracy.
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL product | How it may help | Limitation |
|---|---|---|---|---|
| Diesel Injector Deposits | Dirty injectors reduce efficiency and performance. | ADFPCN-EA | Cleans dirty injectors and lubricates pumps/injectors. | Requires proper treat rate. |
| Engine Wear (High Mileage) | Older diesel engines require robust protection. | EFMQT-EA | Provides exceptional engine protection. | Diagnosis required for existing wear. |
| Extreme Temperatures | Viscosity changes can affect lubrication. | EFOQT-EA | Designed for unique European vehicle demands. | Follow viscosity guidelines. |
Common maintenance concerns for this vehicle
Owners of the W123 series should focus on preserving mechanical integrity through regular inspections. Key areas include:
- Cooling System Health: Essential for long-term engine reliability.
- Fuel System Cleanliness: Crucial for maintaining injector and pump performance.
- Turbocharger Inspection: Necessary due to the turbodiesel configuration of this model.
Recall, TSB, and manufacturer communication notes
Official NHTSA recall research for the 1982 Mercedes Benz 300cd returned no recall records. Official NHTSA complaint research also returned no complaint records. However, this does not prove the vehicle has no issues; it only means these specific API searches returned no results. Owners should always verify open recalls by VIN as applicability can depend on production date and equipment.
About this vehicle
The 1982 Mercedes-Benz 300cd is a notable member of the W123 series, which was produced between November 1975 and January 1986. This generation earned a global reputation for exceptional durability and reliability, often utilized by taxi companies due to its ability to reach extremely high mileages, sometimes exceeding 500,000 kilometers with only minor mechanical issues.
At the heart of this vehicle is the OM617 engine family, a straight-5 diesel engine. The OM617 is widely regarded as one of the most reliable engines ever manufactured and is known for its longevity, with some instances exceeding 1,000,000 km without requiring a rebuild. This robust build quality made Mercedes-Benz highly popular in North America during the 1980s.
It is important to note that this vintage model predates modern ‘BlueTEC’ technology. While BlueTEC refers to advanced NOx reducing systems like Selective Catalytic Reduction (SCR), the 1982 300cd relies on its classic mechanical design. Maintenance should prioritize period-correct workshop manuals and focus on the cooling, fuel, and turbocharger systems to preserve this legendary diesel engine.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for a 1982 Mercedes 300CD?
The engine requires 7.9 quarts of oil when performing a change with the filter.
What viscosity should I use for my diesel Mercedes?
Depending on your temperature, AMSOIL recommends 0W-30 or 0W-40 for all temperatures, 10W-40 above -20°C, and 5W-30, 5W-40, or 5W-50 above -25°C.
How much transmission fluid does the 722.3 transmission take?
The total fill capacity for the 4-speed 722.3 automatic transmission is 6.4 quarts, with an initial fill of 5.1 quarts.
Can I use AMSOIL for my Mercedes brake system?
Yes, the AMSOIL lookup lists BFLVCN-EA for this application. The lookup note also references the requirement to use DOT 4 plus or products approved on MB Sheet 331.0.
Does my Mercedes need special coolant?
The AMSOIL lookup lists ANTPC1G-EA and ANT1G-EA for this vehicle. The coolant capacity is 13.2 quarts.
How do I check my oil level correctly?
After refilling or turning the engine off, allow at least 5 minutes to pass before checking the oil level to ensure an accurate reading.
Disclaimer: Not all information is confirmed from source data. Always verify specifications against your physical vehicle or original manufacturer documentation.