The Mitsubishi 3.9L is a 3.9 L engine. It holds 22.7 L (6.0 gal) of oil and 42.4 L (11.2 gal) of coolant.
Also known as: Mitsubishi 3.9L
| Oil capacity | 22.7 L |
|---|---|
| Coolant capacity | 42.4 L |
| Displacement | 3.9 L |
No generator set in our catalog cites this exact engine designation yet; its specifications and fault codes are documented here.
| Code | Meaning |
|---|---|
| L3 | Circulation water temperature overheat protection |
| L4 | DHW tank water temperature overheat protection |
| L5 | Indoor unit temperature thermistor (THW1, THW2, THW5A, THW5B, THW6, THW7, THW8, THW9) failure |
| L6 | Circulation water freeze protection |
| L8 | Heating operation error |
| L9 | Low primary circuit flow rate detected by flow sensor or flow switch (flow switches 1, 2, 3) |
| LA | Pressure sensor failure |
| LB | High pressure protection |
| LC | Boiler circulation water temperature overheat protection |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 090635 | Amazon eBay | |||
| Fuel filter | 0D58250250 | Amazon eBay | |||
| Oil filter | 0D58250227 | Amazon eBay $39.99 | |||
| Belt | 0D58250477 | Amazon eBay | |||
| Coolant | 11.2 U.S. GALLONS (42.4 LITERS) | 42.4 liters | — | ||
| Oil | 6.0 U.S. GALLONS (22.7 LITERS) | 22.7 liters | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | 50/50 mixture of low silicate ethylene glycol base anti-freeze and soft water | 42.4 liters | A high quality rust inhibitor may be added. When adding coolant, always add the recommended 50/50 mixture. | ||
| Engine oil | SAE 20 | API classification "For Service CC or CD" | Recommended for ambient temperature 12°F to 32°F. | ||
| Engine oil | SAE 30 | API classification "For Service CC or CD" | Recommended for ambient temperature 32°F to 90°F. | ||
| Engine oil | SAE 40 | API classification "For Service CC or CD" | 22.7 liters | Recommended for ambient temperature above 90°F. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
The Mitsubishi 3.9L engine has an oil capacity of 22.7 liters.
The Mitsubishi 3.9L has a displacement of 3.9 liters.