For the 1983 Peugeot 604 with the 2.3L 4-cylinder Diesel Turbo engine, the oil capacity is 5.3 quarts (including filter replacement). The recommended viscosity for all temperatures is 10W-40, or 15W-40 for temperatures above -10°C. AMSOIL recommends using Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil (DEOQT-EA) for outstanding extreme-pressure protection.
What oil does a 1983 Peugeot 604 2.3L Diesel Turbo take?
The engine requires an oil with a CF specification. For optimal performance across various temperatures, the AMSOIL lookup recommends a viscosity of 10W-40 for all temperatures, or 15W-40 when operating in environments above -10°C.
AMSOIL product recommendations
Based on the AMSOIL lookup data, here are the recommended fluids for your Peugeot 604 diesel engine and drivetrain components.
Engine Oil Recommendations
| Product Name | Viscosity | Code |
|---|---|---|
| AMSOIL Signature Series Max-Duty Diesel Oil | 5W-40 | DEOQT-EA |
| AMSOIL 5W-40 Heavy-Duty Diesel Oil | 5W-40 | ADOQT-EA |
Transmission & Differential Recommendations
| Component | Product Name | Code |
|---|---|---|
| Automatic Transmission | Signature Series Multi-Vehicle ATF | ATFPK-EA |
| Automatic Transmission | OE Multi-Vehicle ATF | OTFQT-EA |
| Manual Transmission | Premium Protection 10W-40 | AMOQT-EA |
| Manual Transmission | Extended-Life 10W-40 | XLOQT-EA |
| Rear Differential | SEVERE GEAR® 80W-90 | AGLPK-EA |
Coolant & Brake Fluid
| Component | Product Name | Code |
|---|---|---|
| Engine Coolant | Passenger Car & Light Truck Antifreeze | ANTPC1G-EA |
| Engine Coolant | Propylene Glycol Antifreeze | ANT1G-EA |
| Clutch Fluid | DOT 3 and DOT 4 Synthetic Brake Fluid | BFLVCN-EA |
Engine Oil Specifications
| Specification | Details |
|---|---|
| Oil Grade | CF |
| Viscosity (All Temps) | 10W-40 |
| Viscosity (Above -10°C) | 15W-40 |
Engine Oil Capacity
| Condition | Capacity |
|---|---|
| With Filter Change | 5.3 quarts |
Note: Always check the oil level after refilling.
How much transmission and differential fluid is required?
Capacities vary significantly between automatic and manual configurations. For the 3-speed 3HP-22 automatic transmission, the total fill capacity is 5.5 quarts, with an initial fill of 1.7 quarts. The manual BA 7/5 (5-SPD) requires 3.4 pints. The rear differential has a capacity of 3.4 pints.
Transmission Capacities
| Type | Capacity |
|---|---|
| Automatic (3HP-22) Total Fill | 5.5 quarts |
| Automatic (3HP-22) Initial Fill | 1.7 quarts |
| Manual (BA 7/5 5-SPD) | 3.4 pints |
Differential Capacity
| Location | Capacity |
|---|---|
| Rear Differential | 3.4 pints |
Note: For the rear differential, fill with oil designated for use in limited slip differentials.
Coolant and Brake Fluid Specifications
The engine cooling system has a capacity of 11.1 quarts. AMSOIL offers both pre-mixed ethylene glycol (50/50) and concentrated propylene glycol options. For the clutch/hydraulic brake system, DOT 4 hydraulic fluid is recommended.
Coolant Details
| Component | Capacity |
|---|---|
| Engine Coolant | 11.1 quarts |
Coolant Options:
– AMSOIL Passenger Car & Light Truck Antifreeze (Ethylene glycol 50/50 pre-mix)
– AMSOIL Propylene Glycol Antifreeze (Concentrated – requires mixing with distilled or high-quality water)
Diesel maintenance notes for this vehicle
Because this vehicle utilizes a turbocharged diesel engine from an era where component longevity was prioritized, maintenance typically focuses on thermal management and fuel system integrity. Owners should prioritize the inspection of turbocharger seals, intercooler hoses (if equipped), and the condition of the diesel injection pump. Given the age of the vehicle, rubber components in the cooling system and fuel lines are high-priority service items to prevent vacuum leaks or overheating.
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. | DEOQT-EA | Delivers up to 6X more wear protection. | Requires regular oil changes. |
| Extreme Temperatures | Affects viscosity and flow. | ADOQT-EA | Excels in extreme temperatures. | Not a substitute for proper cooling. |
| Engine Cleanliness | Soot and deposits build up. | XLOQT-EA | Provides 37% more cleaning power. | Depends on service interval. |
Common maintenance concerns for this vehicle
- Turbocharger Integrity: Inspect turbocharger seals and intercooler hoses to prevent oil leaks or boost loss.
- Cooling System Health: Monitor rubber hoses and gaskets; older vehicles are prone to leaks that can lead to overheating.
- Fuel System Maintenance: Ensure the diesel injection pump and fuel lines are in good condition to maintain efficiency.
Recall, TSB, and manufacturer communication notes
Official NHTSA recall research for the 1983 Peugeot 604 returned no recall records. Additionally, no consumer complaints were found via the NHTSA complaints API. However, this does not prove the vehicle has no issues; it only means no records were returned by these specific APIs. Owners should always verify open recalls using their specific VIN.
About this vehicle
The 1983 Peugeot 604 represents the executive class of Peugeot’s lineup during the late production years of the model (1975–1985). While many 604 models were famously equipped with the PRV V6 engine, this specific vehicle features a 2.3L 4-cylinder diesel turbo configuration. This indicates a focus on long-distance cruising and fuel efficiency, aligning with Peugeot’s reputation for robust diesel engineering during this era.
Designed by Pininfarina, the 604 was intended to be Peugeot’s flagship luxury saloon. It shared certain structural principles with the Peugeot 504, utilizing its bulkhead, doors, and portions of the floorpan to create a substantial driving platform. As an executive car from the early 1980s, it was designed for comfort and presence on European roads.
Owners of this specific diesel variant should note that while the chassis architecture is well-documented through its relationship with the 504, the specific nuances of the 2.3L turbo diesel engine and its cooling/lubrication requirements should be verified against specific workshop manuals to ensure accuracy.
Common questions about this vehicle’s diesel oil and maintenance
What is the correct oil viscosity for my Peugeot 604 Diesel?
The AMSOIL lookup specifies 10W-40 for all temperatures, or 15W-40 if operating above -10°C. The required oil specification is CF.
How much oil do I need for a filter change?
You will need approximately 5.3 quarts of oil when performing a service that includes replacing the oil filter.
Can I use synthetic oil in this older diesel engine?
Yes, AMSOIL offers options like DEOQT-EA which is designed for max-duty diesel protection and can help minimize oil consumption.
What should I check regarding the turbocharger?
Maintenance context suggests prioritizing the inspection of turbocharger seals and intercooler hoses to ensure thermal management and prevent leaks.
Does this vehicle require special gear oil for the rear differential?
The lookup note specifies that you should fill with oil designated for use in limited slip differentials. AMSOIL SEVERE GEAR® 80W-90 (AGLPK-EA) contains friction modifiers for such applications.
How do I verify if there are any active recalls?
While no NHTSA records were found for this model year, you should always contact a Peugeot dealer or use an official VIN lookup tool to check for open recalls specific to your vehicle’s production date and equipment.
Disclaimer: Not confirmed from source data. Always verify all capacities, specifications, and part numbers with a dedicated Peugeot service manual before performing maintenance.