For the 1981 Audi 5000 with the 2.0L 5-cylinder diesel engine (Engine Code G CN L), the oil capacity is 4.8 quarts with a filter change. Recommended viscosities vary by temperature, including 10W-30, 15W-40, and 20W-40. AMSOIL recommends AMSOIL 5W-40 MS 100% Synthetic European Motor Oil (AFLQT-EA) for exceptional engine protection in European diesel applications.
What oil does a 1981 Audi 5000 2.0L Diesel take?
The engine requires an oil with a CF grade specification. Depending on your operating temperature, several viscosities are appropriate for this 2.0L 5-cylinder diesel engine. Always verify the current oil level after refilling to ensure accuracy.
AMSOIL product recommendations
Based on the AMSOIL lookup for your 1981 Audi 5000, here are the recommended products for your maintenance needs.
Engine Oil & Filter
| Product Name | Code |
|---|---|
| AMSOIL 5W-40 MS 100% Synthetic European Motor Oil | AFLQT-EA |
| AMSOIL Oil Filter | EAO15-EA |
| WIX Oil Filter | 51515-EA |
| MANN-FILTERS Oil Filter | W94025-EA |
Coolant & Transmission
| Product Name | Code |
|---|---|
| AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
| AMSOIL Signature Series Multi-Vehicle ATF | ATFPK-EA |
| AMSOIL OE Multi-Vehicle ATF | OTFQT-EA |
Engine Oil Specifications
| Viscosity Range | Temperature Range |
|---|---|
| 10W-30, 10W-40 | -20 To 10°C |
| 15W-40, 15W-50 | -15 To 30°C |
| 20W-20 | -10 To 10°C |
| 20W-40, 20W-50 | -10 To 30°C |
| 30 | 0 To 30°C |
| 40 | Above 20°C |
Oil Grade: CF
Engine Oil Capacity & Torque
| Description | Value |
|---|---|
| Capacity (with filter) | 4.8 quarts |
| Oil Drain Plug Torque | 29 ft/lbs |
How much oil does it take with a filter change?
The total capacity for the 1981 Audi 5000 2.0L diesel engine is 4.8 quarts when performing a service that includes a new oil filter. It is essential to check the oil level on the dipstick after refilling to confirm the correct volume has been added.
Automatic Transmission Fluid Specifications
For vehicles equipped with the automatic transmission (087….AF2), specific fluid requirements apply. The AMSOIL lookup note references that DEXRON II could have been replaced with Esso Type LT 71141, P/N G 052 162 (-A1, -A2, -A6), which is clear-yellow in color.
ATF Capacities
| Application | Capacity |
|---|---|
| 3 speed 087 Total Fill | 6.3 quarts |
| Initial Fill | 3.2 quarts |
Note: The final drive is serviced separately. Always verify fluid before topping off.
Coolant Specifications
The cooling system capacity for this vehicle is 10 quarts. AMSOIL offers both pre-mixed and concentrated options to maintain engine temperature and protect internal components.
| Product Type | Formulation Notes |
|---|---|
| Antifreeze & Coolant | Ethylene glycol 50/50 pre-mix |
| Propylene Glycol Coolant | Concentrated – requires mixing with distilled or high-quality water |
Common diesel oil-related concerns and how AMSOIL products may help
Maintaining older diesel engines requires addressing specific lubrication challenges to ensure longevity.
| Concern | Why it matters | AMSOIL product from this lookup | How it may help | Important limitation |
|---|---|---|---|---|
| Engine Wear | Diesel engines face high pressure and friction. | AFLQT-EA | Provides exceptional engine protection. | Requires regular oil changes. |
| Contaminants | Small particles can cause abrasive wear. | EAO15-EA | 99% efficiency at 20 microns; greater capacity for small contaminants. | Filter must be replaced per service interval. |
| Cooling System Corrosion | Metal, gaskets, and hoses are prone to degradation. | ANTPC1G-EA | Protects all cooling system metals, gaskets, and hoses. | Check for leaks regularly. |
Diesel maintenance notes for this vehicle
- Oil Level Verification: Always check the oil level after refilling to ensure it is within the correct range.
- Filter Efficiency: Using high-efficiency filters like the AMSOIL Oil Filter can help reduce engine wear by capturing small, wear-causing contaminants.
- Temperature Considerations: Select your oil viscosity based on your local climate (e.g., use 10W-40 for temperatures between -20 and 10°C).
Recall, TSB, and manufacturer communication notes
NHTSA research indicates three specific recalls for the 1981 Audi 5000:
Disclaimer: These are historical records. Owners should verify current open recalls by VIN through an authorized dealer or the NHTSA website.
About this vehicle
The 1981 Audi 5000 represents a specific era of Audi’s evolution within the Volkswagen Group. In North American markets, the ‘5000’ designation was used to market the C2 and C3 generations of the Audi 100. These vehicles were positioned as mid-size/executive cars, competing with established luxury offerings from Mercedes-Benz and BMW.
This specific diesel variant features a 2.0L 5-cylinder engine (Engine Code G CN L). For owners of this diesel model, maintenance typically focuses on the longevity of the five-cylinder powerplant and the integrity of the fuel and cooling systems. Because these are older diesel engines, maintaining proper lubrication and filtration is essential for preventing premature wear. Users should note that broader technical specifications should be verified against official workshop manuals to ensure accuracy for specific maintenance tasks.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 1981 Audi 5000 diesel?
The capacity is 4.8 quarts when including a filter change. Always check the level after refilling.
What viscosity should I use in winter?
For temperatures between -20 and 10°C, the AMSOIL lookup suggests 10W-30 or 10W-40.
How do I prevent engine wear in this diesel?
Using high-quality synthetic oils like AFLQT-EA and efficient filters like EAO15-EA can help protect engine components.
Does the automatic transmission require special fluid?
The lookup note references that DEXRON II could have been replaced with Esso Type LT 71141 (P/N G 052 162). Always verify your specific transmission requirements.
Can I use any antifreeze in my Audi?
It is recommended to use a formula that protects all cooling system metals and gaskets, such as the AMSOIL Passenger Car & Light Truck Antifreeze.
How can I check for active recalls?
You should always verify open recalls by using your vehicle’s unique VIN through an official manufacturer database or the NHTSA website.
Verification Disclaimer: While this information is compiled from AMSOIL and NHTSA data, always consult your official vehicle owner’s manual and a certified mechanic before performing maintenance.