VGT Series Break-in Procedures

When engines are new, they require certain break-in, or run-in, procedures before they are subjected to heavy use. The reason is that, though the engines are tested at the factory, seals and gaskets need both heat and time to form a good seal, and the engine needs time to properly lubricate. If proper break-in procedures are not followed, severe engine damage can result.

Below is the procedures for our VGT Series of engines.

The Marinediesel VGT series engines need break-in time before being operating to its full potential. This is due to the design characteristics of the base engine.

Follow the recommendations below:

0-5hrs: Use varied load and rpm but do not load the engine above 50% throttle and keep maximum rpm below 2500. Do not stay at one load and rpm configuration for more than 30 minutes at a time.

5-10hrs: Use varied load and rpm but do not load the engine above 60% throttle and keep maximum rpm below 2800. Do not stay at one load and rpm configuration for more than 30 minutes at a time. A few short WOT trials up to 3600 rpm is allowed for performance trials

Do an oil and filter change after the engine has run a total of 10hrs.

10-30hrs: Use varied load and rpm, the engine can be used up to 100% throttle and full rpm for shorter periods. Do not stay at one load and rpm configuration for more than 30 minutes at a time.

Do an oil and filter change after the engine has run a total of 50hrs.
Use oil and filter as specified in the engine technical manual.

If you have any questions regarding this break-in procedure please consult the technical department at Marinediesel in Sweden.