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2017 Product Brings Changes in Engine Oil.

PC-11 (the 11th upgrade to Proposed Category) is the new standard for diesel engine oil, delivering increased resistance to oxidation – an issue in today’s hotter-running engines – as well as improved resistance to aeration and mechanical shear.

Two different categories are forthcoming:

  • CK-4 (must meet Cummins Engineering Standard [CES] 20086) is an updated version of CJ-4 (CES 20081), and is backward-compatible to all engines using Ultra-Low Sulfur Diesel (ULSD). It is going to be available in 10W-30 and 15W-40 formulations, as well as other traditional viscosity grades. It can be used as the normal fill and top-off on older engines, and will have a higher oxidation capacity, to handle the increased heat load in today’s hotter-running engines. It will be the oil of choice for most Cummins engines.
  • FA-4 (CES 20087) is a new low-viscosity oil that has potential fuel-economy benefits, depending on duty cycle, but may not be compatible with all engines.

FA-4 (CES 20087) will be offered primarily at the 10W-30 viscosity grade, with some 5W-30 formulations available in the near future. The FA-4’s lower dynamic viscosity (how the oil performs at high temperature and shear) leads to thinner oil film thickness, and reduces friction within the engine (which can be significant at certain duty cycles), improving fuel economy by some margin.

Many customers will be turning to you for information. For each 2017 engine, Cummins will make an individual decision on which oil category it recommends, and update each Owners Manual accordingly. Educating the industry on recognizing the differences between these two categories will help customers make the right decision to ensure that their engine meets Cummins durability and performance goals.

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