Main Engine 2-Stroke · Main Engines (2-Stroke)
The WinGD 5X72DF-M2 is a low‑speed, inline‑five 2‑stroke dual‑fuel main engine capable of running on methanol and marine diesel oil, delivering up to roughly 80 MW with reversible operation.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
| Cylinder oil feed rate check/adjustment | condition-based, adjusted for fuel mode - confirm against the engine's own manual |
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| Scavenge space inspection | engine-hour based per the manufacturer's schedule for two-stroke crosshead engines of this class - confirm against the manual |
| Exhaust valve overhaul | engine-hour based per the manufacturer's schedule - confirm against the manual |
| Crosshead bearing inspection | per the manufacturer's running-hour schedule for two-stroke crosshead engines - confirm against the manual |
| Methanol fuel system safety function test | per class and IGF Code requirements at defined intervals |
| Turbocharger inspection | condition-based, typically several thousand hours between overhauls for two-stroke main engines - confirm against the manual |
| Cylinder liner wear (diametral) | commonly assessed against roughly 0.6-1.0% of bore diameter as a renewal guide for low-speed two-stroke engines - confirm against the manufacturer's own limit, as dual-fuel operation can shift the wear pattern |
|---|---|
| Piston ring end gap (new) | typically in the 4-8 mm range for engines in this large bore class - confirm against the engine's own manual |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
As a methanol dual-fuel main engine under the IGF Code, class survey includes periodic testing of the fuel gas/vapour detection, ventilation and double-walled piping systems alongside the engine's own Continuous Survey Machinery items, and closer initial survey scrutiny should be expected given the more limited fleet-wide service history of methanol dual-fuel two-stroke engines compared to LNG dual-fuel.
Estimated lifetime: Low-speed two-stroke main engines of this class are typically run 20,000-25,000 h between major overhauls of wearing parts (liners, rings, valves), with the engine block commonly remaining in service for decades given ongoing part renewal - methanol dual-fuel operation is relatively new in service and long-term wear data is still developing
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