For the 1982 GMC Jimmy with the 6.2L 8-cylinder Diesel engine (Engine Code C), the oil capacity is 7 quarts with a filter change. Recommended viscosities include 10W-30 for temperatures below 16°C, 15W-40 for -18 to 16°C, and SAE 30 is preferred for temperatures above 0°C. AMSOIL recommends using the Signature Series 10W-30 Max-Duty Diesel Oil (DTTQT-EA) paired with an AMSOIL Oil Filter (EAO24-EA) for optimal protection.
What oil does a 1982 GMC Jimmy 6.2L Diesel take?
The engine requires an oil with the CF-4 specification. Depending on your operating environment, you should select a viscosity that matches local temperatures: 10W-30 for temperatures below 16°C, 15W-40 for -18 to 16°C, or SAE 30 if temperatures are consistently above 0°C. Always check the oil level after refilling.
AMSOIL product recommendations
The following AMSOIL products are recommended for your 1982 GMC Jimmy 6.2L Diesel to maintain engine health and performance.
Engine Oil Options
| Product Name | Viscosity | Code |
|---|---|---|
| AMSOIL Signature Series Max-Duty Diesel Oil | 10W-30 | DTTQT-EA |
| AMSOIL 10W-30 Heavy-Duty Diesel Oil | 10W-30 | ADNQT-EA |
| AMSOIL Signature Series Max-Duty Diesel Oil | 5W-30 | DHDQT-EA |
Oil Filter Options
Coolant & Transmission Fluid
| Component | Product Name | Code |
|---|---|---|
| Coolant | AMSOIL Passenger Car & Light Truck Antifreeze | ANTPC1G-EA |
| Coolant | AMSOIL Propylene Glycol Antifreeze | ANT1G-EA |
| ATF | AMSOIL Signature Series Fuel-Efficient ATF | ATLPK-EA |
| ATF | AMSOIL OE Fuel-Efficient ATF | OTLQT-EA |
Engine Oil Specifications
| Specification | Details |
|---|---|
| Oil Grade | CF-4 |
Viscosity Guide
| Temperature Range | Recommended Viscosity |
|---|---|
| Below 16°C | 10W-30 |
| -18 to 16°C | 15W-40 |
| Above 0°C | SAE 30 (Preferred) |
How much oil does it take with a filter change?
The total capacity for the 6.2L diesel engine is 7 quarts when performing an oil change that includes a new filter. It is critical to check the oil level after refilling to ensure accuracy.
Oil Capacity & Torque
| Metric | Value |
|---|---|
| Capacity (with filter) | 7 quarts |
| Oil Drain Plug Torque | 13-20 ft/lbs |
Automatic Transmission Fluid Specifications
For the automatic transmission, the manufacturer’s technical service bulletin has updated the specification from Dexron II or III to Dexron VI. Ensure you use a fluid that meets these requirements for your specific transmission model.
Transmission Capacities
| Transmission Type | Total Fill Capacity | Initial Fill Capacity |
|---|---|---|
| THM350C (3 Speed) | 10 quarts | 3.5 quarts |
| THM700-R4 (4 Speed) | 11.5 quarts | 5 quarts |
Diesel maintenance notes for this vehicle
Maintaining a vintage 6.2L diesel requires attention to specific mechanical areas that differ from modern high-pressure common rail engines. Focus on the following:
- Fuel System: Maintain fuel system integrity and prevent air from entering the lines.
- Cold Starts: Ensure glow plug operation and electrical heating systems are functioning correctly for reliable starting.
- Cooling System: Regularly check the cooling system to prevent overheating, especially during heavy-duty towing or high loads.
- Lubrication: Monitor traditional lubrication points common to older chassis designs.
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. | DTTQT-EA | Delivers up to 6X more wear protection. | Requires proper maintenance intervals. |
| Contaminants | Small particles can cause abrasive wear. | EAO24-EA | 99% efficiency at 20 microns. | Filter must be replaced per schedule. |
| Extreme Temperatures | Viscosity changes can affect lubrication. | DTTQT-EA | Excels in extreme temperatures. | Must match viscosity to ambient temp. |
Common maintenance concerns for this vehicle
Based on historical data, owners of the 1982 GMC Jimmy should be aware of several potential areas for inspection:
- Tires: There have been owner reports regarding tire tread separation during high-speed driving. Regular inspections of tire condition and pressure are advised.
- Wheel Hardware: A manufacturer recall (82V128000) noted that rear brake drum balance weights could interfere with aluminum wheels, potentially loosening lug nuts. Verify your wheel/lug nut integrity.
- Lighting: Ensure all exterior lighting and reflectors conform to safety standards for proper illumination.
Recall, TSB, and manufacturer communication notes
Official NHTSA research indicates the following for the 1982 GMC Jimmy:
- Recall (Campaign 06E026000): Related to exterior lighting/replacement lamps failing to meet safety standards regarding amber reflectors.
- Recall (Campaign 82V128000): Related to rear brake drum balance weights potentially causing wheel lug nuts to loosen on vehicles with aluminum wheels.
Note: Always verify open recalls by checking your specific VIN through an authorized dealer or the NHTSA website.
About this vehicle
The 1982 GMC Jimmy is a significant model in General Motors’ full-size SUV history, serving as a contemporary to the Chevrolet K5 Blazer. This era of the Jimmy was built on the larger, full-size platform that shared mechanical commonality with the C/K truck series, preceding the modern Yukon lineage.
Equipped with the 6.2L V8 diesel engine, this vehicle belongs to a different mechanical era than modern Duramax technology. While often categorized by enthusiasts under the broader GM diesel umbrella, the 6.2L is a vintage platform that priorities heavy-duty utility and long-term durability. Maintenance for these engines focuses on traditional diesel components such as glow plugs, fuel system air prevention, and robust cooling systems to handle towing and heavy loads.
Owners of this classic SUV often focus on preserving the mechanical integrity of the engine and chassis, which were designed for workhorse performance in a full-size package. Because these are vintage engines, technicians should always cross-reference modern synthetic fluid standards with period-correct service literature to ensure compatibility with older seals and components.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 1982 GMC Jimmy 6.2L?
The engine takes 7 quarts of oil when including a filter change. Always check the level after refilling.
Which AMSOIL oil is best for extreme cold?
For temperatures below 16°C, AMSOIL recommends a 10W-30 viscosity such as DTTQT-EA.
Does my transmission need Dexron VI?
Yes, the manufacturer’s technical service bulletin indicates that the specification has been updated from Dexron II or III to Dexron VI for this application.
How often should I change my coolant?
AMSOIL offers protection for up to 150,000 miles or 5 years for their Passenger Car & Light Truck Antifreeze, but you should consult your manual for specific intervals.
What is the torque spec for the oil drain plug?
The oil drain plug should be torqued to 13-20 ft/lbs.
Can I use modern synthetic oil in this vintage diesel?
AMSOIL provides high-quality synthetic options like the Signature Series that are designed for max-duty diesel protection, but always verify compatibility with your specific engine components.
Disclaimer: Information provided is based on available source data. Always verify all maintenance specifications and recall status using your vehicle’s VIN through an authorized dealer or official manufacturer documentation.