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    • Rodney Walker

    Rodney Walker

    Technical Director, Safety-Kleen Systems

    Engine Oil Expert for Ask the Expert on VehicleServicePros.com.

    Technical Director, Safety-Kleen Systems and producer of EcoPower, the eco-friendly engine oil.

    Rodney Walker
    Tools

    Ask the Expert: What is PC-11 and the new API oil category for heavy duty diesel engines?

    Rodney Walker
    June 3, 2013
    The new API service category or categories will replace CJ-4 for heavy duty diesel engines.
    Rodney Walker
    Tools

    Ask the Expert: What's the proper way to extend oil drain intervals?

    Rodney Walker
    June 3, 2013
    Results from an oil analysis can help you determine an optimum drain interval based on your fleet's engines, service requirements and other factors.
    Rodney Walker
    Tools

    Ask the Expert: How can I estimate the environmental benefit from using re-refined engine oil?

    Rodney Walker
    June 3, 2013
    A greener engine oil means far less greenhouse gases. Try out this GHG calculator on your fleet.
    Rodney Walker
    Tools

    Ask the Expert: How do I know if re-refined oils are okay to use in my engines?

    Rodney Walker
    June 3, 2013
    Check with your engine manufacturer for the specific recommendation on which engine oil to use.