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  1. Join Date
    Oct 2002
    Posts
    509
    #1
    The Making of a New Category of Engine Oils:

    The Environmental Protection Agency (EPA) is the driving force behind changes to diesel engine oil specifications. EPA regulations, which require reductions in exhaust gas emissions, has forced the majority of OEMs to redesign engines to meet more stringent emissions standards. These engine redesigns typically put additional stresses on the lubricant.
    API CI-4 began as Proposed Category 9 (PC-9) and has been in development for several years. It is a distinguishable performance upgrade over API CH-4.

    2 Reasons for the new CI-4 category:
    1. The EPA mandated a 50 percent reduction of nitrogen oxide, or NOx, emissions below 1998 limits for diesel engines.
    2. Engine design modifications to achieve a 50 percent reduction in emissions called for higher cylinder pressures, increased piston ring zone temperatures and, in most cases, Exhaust Gas Recirculation (EGR).


    Impact of the Change
    Lubricant Manufacturers have 9 months
    Due to complications with EGR technology and agreement on test limits, lubricant manufacturers will have only nine months between test limit agreement (December 5, 2001) and licensing for API CI-4 oils (August 2002).

    Backward Compatibility
    From the beginning, API CI-4 was intended to be a category that is ?backward compatible.? Backward compatibility means API CI-4 oils will provide protection for both existing engines and new EGR engines coming to market in October 2002. To compensate for EGR, lubricant manufacturers have had to significantly boost their additive packages. Engine manufacturers were concerned that the additional chemistry would attack more sensitive older engine components and decrease engine life.

  2. Join Date
    Oct 2002
    Posts
    1,790
    #2
    Nice info. The only current API CI-4 rated diesel oils sold in the Phils is the Mobil Delvac 1 and Delo 400. (sold only in 20 liter pails and 200 liter drums).

  3. Join Date
    Oct 2002
    Posts
    509
    #3
    roydok,

    yung mobil delvac 1 synthetic or mineral based? how about yung delo 400?

    regards.

  4. Join Date
    Oct 2002
    Posts
    1,790
    #4
    Mobil Delvac 1 is synthetic while Delo 400 I recall is mineral.:D

API CH-4