What oil does a 1982 Buick Riviera 5.7L Diesel take?
The 1982 Buick Riviera with the 5.7L 8-cylinder diesel engine (Engine Code N) requires an oil viscosity of 10W-30 for temperatures below 16°C, 15W-40 for temperatures between -18 to 16°C, or 30 for continuous driving above 0°C. The oil capacity is 7 quarts with a filter change. AMSOIL recommends using Signature Series Max-Duty Synthetic Diesel Oil for superior protection.
AMSOIL product recommendations
Based on the vehicle specifications, the following AMSOIL products are recommended for your maintenance needs:
Engine Oil & Filter
| Product Name | Code |
|---|---|
| AMSOIL Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil | DTTQT-EA |
| AMSOIL 10W-30 Heavy-Duty 100% Synthetic Diesel Oil | ADNQT-EA |
| AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil | DHDQT-EA |
| AMSOIL Oil Filter | EAO64-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 Fuel-Efficient 100% Synthetic ATF | ATLPK-EA |
| AMSOIL OE Fuel-Efficient 100% Synthetic ATF | OTLQT-EA |
Differential Gear Lube
| Product Name | Code |
|---|---|
| AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube | AGLPK-EA |
| AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube | SVGPK-EA |
Engine Oil Specifications & Details
Proper lubrication is critical for the longevity of the 5.7L diesel engine. Always verify your specific operating temperature before selecting a viscosity.
Oil Viscosity Guide
| Temperature Range | Recommended Viscosity |
|---|---|
| Below 16°C | 10W-30 |
| -18 to 16°C | 15W-40 |
| Above 0°C (Continuous Driving) | 30 |
Engine Oil Capacity & Torque
- Capacity: 7 quarts (with filter). Always check the oil level after refilling.
- Oil Drain Plug Torque: 30 ft/lbs.
- Oil Grade: CF.
Automatic Transmission Fluid Specifications
For the THM325-4L transmission, note that manufacturer technical service bulletins have updated specifications from Dexron II or III to Dexron VI.
| Fill Type | Capacity |
|---|---|
| Initial Fill | 3.2 quarts |
| 4-Speed THM325-4L Total Fill | 10 quarts |
Coolant Specifications
The cooling system capacity for this vehicle is 18 quarts. Maintaining the correct coolant concentration is vital for protecting all metals, gaskets, and hoses.
- AMSOIL Passenger Car & Light Truck Antifreeze: 50/50 Ethylene glycol pre-mix formulation.
- AMSOIL Propylene Glycol Antifreeze: Concentrated; requires mixing with distilled or high-quality water.
Differential Lubricant (Front)
The front differential requires GL-5 80W-90 specification.
- Capacity: 3.2 pints.
- AMSOIL Options: SEVERE GEAR® 80W-90 or 75W-90 are available for advanced wear protection and thermal control.
Common diesel oil-related concerns and how AMSOIL products may help
Diesel engines face unique stresses that require specialized lubrication strategies.
| Concern | Why it matters | AMSOIL Product | How it may help | Limitation |
|---|---|---|---|---|
| Wear Protection | High pressure in diesel combustion causes component wear. | Signature Series Diesel Oil | Delivers up to 6X more wear protection. | Requires proper service intervals. |
| Extreme Temperatures | Viscosity changes can affect lubrication during start-up or heavy use. | Signature Series Diesel Oil | Excels in extreme temperatures and maintains thickness. | Not a substitute for correct viscosity selection. |
| Contaminant Loading | Small particles can cause engine damage. | EAO64-EA Filter | 99% efficiency at 20 microns; greater capacity for contaminants. | Must be replaced according to schedule. |
Diesel maintenance notes for this vehicle
Based on the technical profile of early 1980s diesel engines, owners should prioritize:
- Fuel System Integrity: Maintaining high-quality fuel filtration is critical for diesel longevity.
- Cooling Efficiency: Ensure the cooling system is free of contaminants to prevent overheating.
- Oil Level Monitoring: Given the 7-quart capacity, regular checks are recommended after refills.
Recall, TSB, and manufacturer communication notes
Official NHTSA recall research for the 1982 Buick Riviera identified one campaign:
- Campaign 82V012000: Related to the Fuel Injection System. The governor weight retainer in the injection pump may fail, potentially causing the throttle valve to stick. The remedy involves replacing the governor weight assembly at no cost to the owner.
Note: Always verify open recalls by using your specific VIN through an authorized dealer or the NHTSA website.
Common maintenance concerns for this vehicle
Based on consumer reports and historical data, owners of this era Buick may encounter:
- Suspension Wear: NHTSA complaints have noted issues regarding excessive wear and tear on front-end components, specifically mentioning torsion bars.
- Fuel System Reliability: As with many early diesel models, maintaining the injection system is a primary concern for longevity.
About this vehicle
The 1982 Buick Riviera represents a unique era in General Motors’ history, marking the transition of luxury models to front-wheel drive configurations. This generation moved away from its original rear-wheel drive roots, a change implemented starting with the 1979 model year.
This specific model is equipped with a 5.7L 8-cylinder diesel engine (Engine Code N). While Buick is widely recognized for its gasoline V6 families—such as the 3.8L 3800 series—this diesel configuration belongs to a specialized niche of GM’s diesel offerings from the early 1980s. Because this vehicle sits at the intersection of Buick luxury and diesel utility, maintenance requirements differ significantly from standard gasoline Riviera models.
Owners often research fuel system integrity, glow plug functionality, and cooling system efficiency to ensure long-term reliability. Due to the specialized nature of this engine, technical specifications should always be cross-referenced with dedicated diesel service manuals or verified VIN-specific literature to prevent engine damage.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 1982 Buick Riviera Diesel?
The capacity is 7 quarts when performing an oil change with a new filter. Always check the level after refilling.
Which AMSOIL oil is best for high-wear protection?
AMSOIL Signature Series Max-Duty Diesel Oil (such as DTTQT-EA) is designed to deliver up to 6X more wear protection based on third-party testing.
What viscosity should I use in cold weather?
For temperatures below 16°C, the AMSOIL lookup recommends a 10W-30 viscosity. If temperatures are between -18 and 16°C, 15W-40 is suggested.
Does my transmission need special fluid?
The AMSOIL lookup note references an update from Dexron II or III to Dexron VI per a manufacturer Technical Service Bulletin. The lookup lists ATLPK-EA or OTLQT-EA for this application.
How often should I change my oil filter?
While specific intervals depend on driving conditions, using a high-efficiency filter like the AMSOIL EAO64-EA provides 99% efficiency at 20 microns to help reduce engine wear.
Is there a recall for my diesel Riviera?
NHTSA records show a recall regarding the fuel injection system’s governor weight retainer. You should verify your specific VIN with a dealer to confirm if this applies to your vehicle.
Disclaimer: All information is sourced from provided technical data. Please consult your owner’s manual or a professional mechanic to confirm specifications for your specific vehicle before performing maintenance.