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    What Is Acceptable Oil Consumption in Diesel Engines

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    bejoythomas
    All engines will consume some oil, but high consumption can damage engines over time. External oil leaks are easy to identify but internal leaks from worn parts are harder to see and more expensive to fix. To determine if an engine's oil use is excessive, its consumption should be measured over at least two oil change periods and compared to guidelines accounting for factors like operating conditions and load. Taking time to properly diagnose the problem can prevent unnecessary repairs and save money.

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    What Is Acceptable Oil Consumption in Diesel Engines

    Uploaded by

    bejoythomas
    95 views2 pages
    All engines will consume some oil, but high consumption can damage engines over time. External oil leaks are easy to identify but internal leaks from worn parts are harder to see and more expensive to fix. To determine if an engine's oil use is excessive, its consumption should be measured over at least two oil change periods and compared to guidelines accounting for factors like operating conditions and load. Taking time to properly diagnose the problem can prevent unnecessary repairs and save money.

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    oil consumption

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    What is Acceptable Oil Consumption in Diesel Engines

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    All engines will consume some oil, but high consumption can damage engines over time. External oil leaks are easy to identify but internal leaks from worn parts are harder to see and more expensive to fix. To determine if an engine's oil use is excessive, its consumption should be measured over at least two oil change periods and compared to guidelines accounting for factors like operating conditions and load. Taking time to properly diagnose the problem can prevent unnecessary repairs and save money.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    95 views2 pages

    What Is Acceptable Oil Consumption in Diesel Engines

    Uploaded by

    bejoythomas
    All engines will consume some oil, but high consumption can damage engines over time. External oil leaks are easy to identify but internal leaks from worn parts are harder to see and more expensive to fix. To determine if an engine's oil use is excessive, its consumption should be measured over at least two oil change periods and compared to guidelines accounting for factors like operating conditions and load. Taking time to properly diagnose the problem can prevent unnecessary repairs and save money.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    What is Acceptable Oil Consumption in Diesel Engines?

    All engines will consume some amount of oil, and as an engine ages and wears we generally
    accept increases in consumption, but in low mileage or low hour engines oil consumption can be
    frustrating. Letting an engine with truly high oil consumption go unchecked can result in
    shortened engine life and/or engine failures.

    External oil leaks are the easiest to identify and shouldn’t be underrated. A few small external
    leaks can add up to a considerable amount of oil over time, and obviously these can lead to
    safety concerns.

    Internal oil leaks that allow oil into the combustion chamber from rings not seating due to
    improper break-in procedures, incorrectly installed rings, leaking turbo seals, worn valve train
    components, etc…are harder to indentify and more expensive to repair. It’s not always major
    problems, something as simple as: a failing air compressor, wrong type/weight of oil, or over
    filling the crank case can cause oil consumption.

    Before an engine would be disassembled a study should be done to track the actual amount of oil
    usage and determine if the engine truly is consuming questionably high amounts of oil.

    There are different methods to calculate excessive oil consumption. Some deal with calculations
    involving load factors and BSCO (brake specific oil consumption) and grams per brake
    horsepower hour (g/bkW-h) or pounds per brake horsepower hour (lb/bhp-h). Combining the
    O.E. information, we’ve found the simplest guideline we’ve developed is shown in the chart
    below. The chart (see illustration below) compares the engines fuel usage in comparison to its
    oil consumption. Oil usages should be recorded over at least two consecutive regular service
    oil change periods to determine a reliable base line.
    There are conditions and circumstances where engines falling in this questionable range could
    still be within acceptable limits.

    Obviously operating conditions can play major roles and consideration must be given to things
    such as:

    • Load factors
    • Oil density and additives
    • Operating practices
    • Operating temperatures
    • Maintenance programs and practices
    • Equipments applications

    Taking the time to investigate and understand the problem can save you time and money. In
    some applications and environments the demands placed on the engine can contribute to the
    additional oil consumption and additional “repairs” to the engine may not produce
    improvements.

    The guidelines above are to be used as a reference. Refer to the latest O.E. manufacturer’s
    bulletins and publications for more information.

    Used by permission of Engine Builder magazine.

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