ASTM D6987 Standard Test Method for Evaluation of Diesel Engine Oils in T-10 Exhaust Gas Recirculation Diesel Engine

    ASTM D6987 Introduction

    The T-10 engine test was designed to simulate the operating stresses imposed by exhaust gas recirculation technology, a common method used to reduce nitrogen oxide (NOx) emissions in diesel engines. EGR systems do raise the oil soot and acidity content, so it became crucial to test oil performance under such conditions. ASTM D6987 offers a robust approach to emulating field engine stresses and measuring oil performance. Values like top ring weight loss, lead corrosion, increase in viscosity, and tendencies for filter plugging are thoroughly tested. This ensures that the oils not only safeguard the engine but also retain efficiency and emissions acceptance over longer service intervals.

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    ASTM D6987 Test Method

    Engine Type UsedCummins M11 T-10 EGR diesel engine operated under controlled load and speed cycles
    Key Performance MetricsTop piston ring weight loss, lead corrosion rating, and viscosity increase at 40 °C
    Test DurationApproximately 200 hours of continuous engine operation under defined conditions.

    ASTM D6987 Equipment and Sample Preparation

    Specimen PreparationFreshly blended diesel engine oil, 7.5 liters, conditioned before introduction into the engine
    Specimen DimensionsMeasured as oil volume and consumption throughout the 200-hour test period, tracked in milliliters
    Test EquipmentFull-scale Cummins M11 T-10 EGR test stand with exhaust handling, filtration, and data acquisition systems

    ASTM D6987 Test Results and Interpretation

    Results of ASTM D6987 are interpreted through the observation of wear levels, severity of lead corrosion, changes in viscosity, and filter plugging tendencies. Oils that indicate little deterioration and fall within established limits of tolerance are deemed fit for use in EGR-equipped diesel engines.

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    ASTM D7422 focuses on the Mack T-11 engine test for evaluating oil performance in soot-handling, while ASTM D7589 covers the Cummins ISM test procedure. ASTM D7468, on the other hand, addresses oil performance in modern engines with after-treatment systems.

    Materials Commonly Tested with ASTM D6987 

    It is primarily used for evaluating heavy-duty diesel engine oils that are formulated for EGR-equipped engines in severe service conditions.

    Applications of ASTM D6987 in Industry

    The ASTM D6987 applies in the development, approval, and quality assurance used in commercial trucks, manufacturing machinery, and power generation engines.

    Safety and Best Practices in ASTM D6987 

    Under D6987, all tests require proper handling of high-temperature equipment, exhaust gases, and lubricants. The personnel must follow laboratory safety procedures and engine operation guidelines to reduce risks.

    Importance of ASTM D6987  

    ASTM D6987 is critical to the delivery of effective wear protection by diesel engine oils, control of soot, and stability in EGR conditions. Its function in certifying heavy-duty oils makes it a necessity in the automotive and lubrication industries.

    FAQ

    Where can I get the astm d6987 tested?
    You can share your astm d6987 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d6987 test to various testing techniques.
    Please contact us for a detailed quote for your astm d6987 testing needs. Cost incurred to carry out different astm d6987 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
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