How long will an engine last?

 

How long will an engine last?

This is a fair question, and one which can be fairly difficult to answer given the number of variables involved. Some of the factors that influence engine life include:

Type of engine. Is the engine marine or industrial? Industrial, or on-road engines have a much longer life span than marine engines. Why? Several reasons: Better efficiency of cooling; Less variation in RPM; Typically, much lower resistance (water gives much more resistance than friction from four small tires, in addition to vessels being subject to wind resistance also); Fewer devices that can “go wrong” or break (particularly with the cooling system); Typically higher quality and more consistent quality fuel; Much, much less environmental stress, such as corrosion.

Use. Marine engines typically use higher throttle with more variation than engines used on land. Engines used as gensets, in particular, with a low, continuous RPM tend to last a very long time.

Maintenance. Maintenance performed according to the manual’s maintenance schedule have a significantly longer lifespan and service life.

Environment. The marine environment is harsh. Salt air, corrosion, rust, and contact with water all reduce engine life cycle.

In general, using our Marinediesel 6.6L engine as an example, customers can generally expect to receive a service life from their engines:

Marine: 10,000 to 15,000 hours.

Land: Approximately 1,000,000 km.

Genset: Approximately 80,000 hours.