What oil does a 1982 Oldsmobile Cutlass 5.7L Diesel take?
For the 1982 Oldsmobile Cutlass with the 5.7L 8-cylinder Engine Code [N] Diesel, the recommended oil viscosity depends on ambient temperature: 10W-30 is used below 16°C, 15W-40 between -18 to 16°C, and SAE 30 is preferred above 0°C. The engine requires 7 quarts of oil with a filter change. AMSOIL recommends using their Signature Series or Heavy-Duty synthetic diesel oils for superior protection.
AMSOIL product recommendations
Based on the vehicle specifications, AMSOIL offers several high-performance lubrication options to maintain your 5.7L Diesel engine and transmission.
Engine Oil Recommendations
| Product Name | Viscosity | Product Code |
|---|---|---|
| AMSOIL Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil | 10W-30 | DTTQT-EA |
| AMSOIL 10W-30 Heavy-Duty 100% Synthetic Diesel Oil | 10W-30 | ADNQT-EA |
| AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil | 5W-30 | DHDQT-EA |
Oil Specification: CF
Oil Filter Recommendation
| Product Name | Product Code |
|---|---|
| AMSOIL Oil Filter | EAO64-EA |
Coolant & Transmission Fluid
| Component | Product Name | Product Code |
|---|---|---|
| Coolant | AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| Coolant | AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
| ATF | AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF | ATLPK-EA |
| ATF | AMSOIL OE Fuel-Efficient 100% Synthetic ATF | OTLQT-EA |
Engine Oil Specifications & Details
Proper lubrication is critical for the longevity of the 5.7L diesel engine. Ensure you match the viscosity to your operating environment.
Oil Viscosity Guide
| Temperature Range | Recommended Viscosity |
|---|---|
| Below 16°C | 10W-30 |
| -18 to 16°C | 15W-40 |
| Above 0°C | SAE 30 (Preferred) |
Oil Capacity & Torque
| Description | Specification |
|---|---|
| Oil Capacity (with filter) | 7 quarts |
| Oil Drain Plug Torque | 30 ft/lbs |
Note: Always check the oil level after refilling.
Automatic Transmission Fluid Specifications
The 1982 Cutlass utilizes several different transmission models. Note that manufacturer technical service bulletins have updated these specifications from Dexron II or III to Dexron VI.
Transmission Capacity & Models
| Transmission Model | Initial Fill | Total Fill |
|---|---|---|
| THM325-4L (4 speed) | 3.2 quarts | 10 quarts |
| THM350C (3 speed) | 3 quarts | 10 quarts |
| THM200-4R (4 speed) | 5 quarts | 11 quarts |
| THM250C (3 speed) | 4 quarts | 10.8 quarts |
Note: For these applications, the AMSOIL lookup references AF6 specifications via manufacturer technical service bulletins.
Diesel maintenance notes for this vehicle
- Fuel System Integrity: Given the diesel configuration, prioritize fuel filtration and monitoring fuel system health.
- Cooling System: Maintain cooling system health to prevent overheating; the capacity is 17.4 quarts.
- Oil Level: Always verify oil levels after a refill to ensure accuracy.
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL Product | How it may help | Limitation |
|---|---|---|---|---|
| Engine Wear | Diesel engines face high pressure and friction. | Signature Series Diesel Oil | Delivers up to 6X more wear protection. | Requires proper service intervals. |
| Extreme Temperatures | Viscosity changes can affect lubrication during startup or high heat. | Heavy-Duty Synthetic Diesel Oil | Excels in extreme temperatures and maintains viscosity. | Must match temperature-specific viscosity needs. |
| Contaminants | Small particles can cause abrasive wear. | AMSOIL Oil Filter (EAO64-EA) | Provides 99% efficiency at 20 microns. | Filter must be replaced regularly. |
Common maintenance concerns for this vehicle
Based on historical data, owners of this era of GM vehicles should consider the following:
- Cooling System Health: Monitor hoses and gaskets to prevent leaks.
- Vacuum Lines: Ensure all vacuum lines remain intact for proper engine operation.
- Fuel Delivery: Pay particular attention to fuel filtration and diesel-specific maintenance requirements.
Recall, TSB, and manufacturer communication notes
NHTSA research indicates the following recall information for the 1982 Oldsmobile Cutlass:
- Fuel System (Campaign 82V021000): Hose clamps on the fuel tank filler pipe and vent pipe could fracture, potentially causing fuel leakage during refueling or driving.
- Fuel Injection System (Campaign 82V012000): The governor weight retainer in the injection pump may fail, which could cause the throttle valve to stick.
Disclaimer: Always verify open recalls by using your specific VIN through an authorized dealer or the NHTSA website.
About this vehicle
The 1982 Oldsmobile Cutlass was part of a versatile era for General Motors, where the Cutlass nameplate spanned various lines including the Cutlass Supreme, Cutlass Calais, and Cutlass Ciera. This specific model features the 5.7L 8-cylinder diesel engine (Engine Code N), representing a unique powertrain option within the broader Oldsmobile lineage.
During this period, the Cutlass transitioned through different body styles, including highly successful body-on-frame intermediates. For owners of the diesel variant, maintenance focus often shifts toward fuel system integrity, glow plug operation, and specialized cooling requirements compared to gasoline versions. Because these engines have unique mechanical requirements, it is recommended that owners consult specialized diesel technical manuals for specific performance specifications and service intervals.
Typical use cases for this era of Cutlass included premium mid-size commuting and family transportation. Maintaining the fuel delivery systems and ensuring high-quality lubrication are key to the longevity of these vintage diesel engines.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 1982 Cutlass 5.7L Diesel?
The capacity is 7 quarts when performing an oil change with a new filter installed.
Which viscosity should I use in cold weather?
For temperatures below 16°C, AMSOIL recommends a 10W-30 viscosity. If temperatures are between -18 and 16°C, 15W-40 is appropriate.
How much transmission fluid does the THM200-4R take?
The 4-speed THM200-4R has a total fill capacity of 11 quarts, with an initial fill requirement of 5 quarts.
Does AMSOIL offer filters for this engine?
AMSOIL Oil Filter (code EAO64-EA) is recommended for this application.”
What should I do about the fuel system recall?
If your vehicle is affected by campaign 82V021000 regarding fuel tank filler pipe clamps, a dealer will inspect and replace them at no cost. Verify your VIN to confirm.
Can I use any antifreeze in my cooling system?
The AMSOIL lookup lists the Passenger Car & Light Truck Antifreeze & Coolant (ANTPC1G-EA) which is compatible with all other antifreeze and coolant colors.
Verification Disclaimer: While this article is based on provided technical data, always consult your owner’s manual or a certified mechanic to confirm specific maintenance requirements for your unique vehicle.