Vehicles using M25/660 engine list:
Recommended oil for engine M25/660 engine.
Ask AI about any Engine code
Questions strictly about engine codes (brand/model/engine type/production years).
| Castrol GTX Diesel 15W-40 | |
|---|---|
| SAE 15W-40 | ✔ |
| ACEA A3/B4 | ✔ |
| API CK-4 | ✔ |
| API CJ-4 and earlier | ✔ |
| Mobil Delvac MX 15W-40 | |
|---|---|
| SAE 15W-40 | ✔ |
| ACEA A3/B4 | ✔ |
| API CK-4 | ✔ |
| API CJ-4 and earlier | ✔ |
| Cummins CES 20086 / 20081 | ✔ |
| Volvo VDS-4.5 | ✔ |
| Mack EOS-4.5 | ✔ |
| Total Rubia TIR 6400 15W-40 | |
|---|---|
| SAE 15W-40 | ✔ |
| ACEA A3/B4 | ✔ |
| API CK-4 | ✔ |
| API CJ-4 and earlier | ✔ |
| MB-Approval 228.31 | ✔ |
| MAN M3575 | ✔ |
| Renault RLD-3 | ✔ |
Oil specification key
✔ – Meets the required specification
❓ – Not explicitly stated (use caution; check your vehicle manual)
❌ – Does not meet required specification. Use may cause engine issues.
✔ – Meets the required specification
❓ – Not explicitly stated (use caution; check your vehicle manual)
❌ – Does not meet required specification. Use may cause engine issues.
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Answer generated by AI.
Oil specifications for M25/660 engine
API CH-4
ACEA A3/B3
SAE 15W-40
Most common problems, symptoms & fixes for the M25/660 engine.
Engine M25/660 commonly faces fuel injection pump wear, leading to poor starting and rough running. Diagnose by checking fuel delivery pressure and injector spray patterns. Prevent issues with regular fuel filter changes and clean, quality diesel fuel. Injector clogging is frequent; clean or replace injectors if misfires occur. Overheating can result from radiator blockages—flush cooling system periodically and inspect hoses. Valve stem seal wear causes smoke; check valve clearances and replace seals as needed. Regular oil changes with correct grade oil prevent premature wear. Address turbocharger issues by inspecting for shaft play and oil leaks. Timely maintenance ensures reliability and longevity.