What oil does a 1985 Isuzu Pickup 2.2L Diesel take?
For the 1985 Isuzu Pickup with the 2.2L 4-cylinder Engine Code [S] S Diesel, the engine oil capacity is 6 quarts with a filter change. Recommended viscosities vary by temperature: 10W-30 for temperatures below 30°C; 15W-40, 20W-40, or 20W-50 for temperatures above -14°C; 30 viscosity for above 0°C; 40 viscosity for above 24°C; and 5W-30 for below -14°C (though 5W-30 is not recommended for sustained high-speed driving). AMSOIL recommends Signature Series 15W-40 for this application.
AMSOIL product recommendations
Based on the AMSOIL lookup data, the following products are recommended for your 1985 Isuzu Pickup diesel engine and related systems:
Engine Oil Options
| Product Name | Part Code |
|---|---|
| AMSOIL Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil | DMEQT-EA |
| AMSOIL 15W-40 Heavy-Duty 100% Synthetic Diesel Oil | ADPQT-EA |
Coolant & Antifreeze
| Product Name | Part Code |
|---|---|
| AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
Transmission Fluid
| Product Name | Part Code |
|---|---|
| AMSOIL Signature Series Multi-Vehicle 100% Synthetic ATF | ATFPK-EA |
| AMSOIL OE Multi-Vehicle 100% Synthetic ATF | OTFQT-EA |
Manual Transmission & Transfer Case
| Product Name | Part Code |
|---|---|
| AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil | ASLQT-EA |
Engine Oil Specifications
Proper lubrication is critical for the high-compression environment of a diesel engine. For this 1985 Isuzu application, ensure you are meeting the required viscosity for your local climate.
Oil Viscosity Guide
| Temperature Range | Recommended Viscosity |
|---|---|
| Below 30°C | 10W-30 |
| Above -14°C | 15W-40, 20W-40, or 20W-50 |
| Above 0°C | 30 |
| Above 24°C | 40 |
| Below -14°C | 5W-30 (Not for sustained high speed) |
Engine Oil Details
| Attribute | Specification/Capacity |
|---|---|
| Oil Grade (AMSOIL lookup) | CF |
| Oil Capacity (with filter) | 6 quarts |
Note: After refilling, always check the oil level.
Transmission and Coolant Capacities
Automatic Transmission
For automatic transmissions (03-55 or 03-56 AF3):
- Total Fill Capacity: 6.3 quarts
- Initial Fill Capacity: 2.1 quarts
Coolant Capacity
| Configuration | Capacity |
|---|---|
| With AT | 11.1 quarts |
| With MT | 9.5 quarts |
Manual Transmission & Transfer Case
For the MSG4A (4-SPD) manual transmission:
- Capacity: 2.7 pints
- Transfer Case Capacity: 9.7 pints (when included with transmission)
Diesel maintenance notes for this vehicle
Maintaining a vintage diesel engine requires attention to specific systems to ensure longevity:
- Fuel System Integrity: Diesel engines of this era rely heavily on clean fuel and proper injection timing.
- Cooling Efficiency: Given the high-compression nature of the 2.2L diesel, maintaining coolant levels and quality is vital to prevent overheating.
- Oil Management: Regular oil changes are necessary to manage soot loading and maintain lubrication in a high-heat environment.
- Filter Verification: While AMSOIL does not provide specific part numbers for the oil or air filters in this lookup, owners should verify filter specifications against the owner’s manual.
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL product from this lookup | How it may help | Important limitation |
|---|---|---|---|---|
| Engine Wear | High compression increases friction. | DMEQT-EA | Delivers up to 6X more wear protection. | Requires proper oil change intervals. |
| Extreme Temperatures | Viscosity changes can affect lubrication. | ADPQT-EA | Excels in extreme temperatures. | Follow viscosity guide for local climate. |
| Cooling System Corrosion | Metal/gasket degradation. | ANTPC1G-EA | Protects all cooling system metals, gaskets, and hoses. | Compatible with other colors. |
Common maintenance concerns for this vehicle
Owners of the 1985 Isuzu Pickup should consider the following practical checks:
- Cooling System Integrity: Check hoses and gaskets regularly, as older rubber components can degrade.
- Fluid Leaks: Monitor for transmission or differential leaks, especially in high-mileage vehicles.
- Filter Restriction: Ensure air and fuel filters are replaced to maintain engine performance and prevent stalling.
Recall, TSB, and manufacturer communication notes
Official NHTSA recall research for the 1985 Isuzu Pickup returned no records at this time. However, owners should always verify open recalls by VIN, as applicability can depend on production date, trim, and specific equipment.
About this vehicle
The 1985 Isuzu Pickup is a significant part of the lineage of compact trucks that influenced the global market during the late 20th century. This model is closely related to the Isuzu Faster series, which was manufactured and marketed across several generations between 1972 and 2002. In various international markets, this platform has been known by names such as the Isuzu KB or TF series, and it was frequently rebadged for other manufacturers within the General Motors portfolio.
Equipped with a 2.2L 4-cylinder diesel engine (Engine Code [S] S), this vehicle was designed for durability, fuel efficiency, and utility. Isuzu is globally recognized as a specialist in the production of diesel engines and commercial vehicles. Because these vehicles were often used for light commercial work or reliable daily transport, they are built to handle high-compression environments typical of diesel powerplants from this era.
Owners of this vintage diesel should prioritize locating a service manual that specifically addresses the 2.2L diesel configuration to ensure correct fluid capacities and filter specifications during maintenance. Maintaining fuel system integrity and cooling efficiency is key to preserving these robust engines.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 1985 Isuzu 2.2L Diesel?
The engine requires 6 quarts of oil when performing a change with the filter.
Can I use 5W-30 in my diesel Isuzu Pickup?
Yes, but AMSOIL notes that SAE 5W-30 is not recommended for sustained high-speed driving in this application.
What oil should I use for extreme cold?
For temperatures below -14°C, the lookup suggests 5W-30. For temperatures above -14°C, options like 15W-40 are recommended.
How much transmission fluid does my automatic Isuzu take?
The total fill capacity for the 3-speed automatic transmission is 6.3 quarts, with an initial fill of 2.1 quarts.
Does AMSOIL offer a synthetic option for my diesel engine?
Yes, AMSOIL recommends Signature Series 15W-40 for outstanding extreme-pressure protection.
How can I check for recalls on my 1985 Isuzu?
While no NHTSA records were found in this research, you should always verify open recalls by contacting a dealer with your specific VIN.
Disclaimer: Not confirmed from source data. Always verify all capacities, specifications, and part numbers against your vehicle’s owner’s manual or a dedicated service guide before performing maintenance.