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What guidelines are used for regular, by the hours on the engine or by the miles put on the truck?
We do oil changes based on hours just like any other large diesel engine and pending type of service this can be 100 to 150 hours.
If one averages 40 miles per hour that could translate to 4000 miles at 100 hours or 6000 miles at 150 hours. Lots of variables to consider. At 100 hours the 6.4 can add .75 to 1 quart of diesel to the engine through the many regens; other engines using similar regen systems are finding similar results. Lots of complaints from customers about this concern. Not effective and efficient for a working diesel engine, plus gives a false situation where one assumes the engine uses no oil between changes.
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