Fuel economy and new engine oils

By Team Writer / September 24, 2016

As part of the new 2017 EPA emissions regulations for diesel engines, two new types of diesel oil are being developed. CK-4 oil is backwards compatible with all current and diesel engines, however will provide better performance than currently available oils. FA-4 type oil will only work in next-generation diesel engines and will provide better fuel consumption while still lubricating and protecting the engine. These new oil types will help medium and heavy duty diesel engines remain efficient while reducing emissions in the near future.

Key Takeaways:

  • CK-4 oils will replace today’s lubricants and will be completely backwards compatible with all current diesel vehicles.
  • New regulations designed to reduce greenhouse gas (GHG) emissions and mandate fuel economy improvements for medium and heavy-duty engines and vehicles are being phased in between now and 2017.
  • According to Mark Betner, Citgo’s heavy-duty product line manager, Lower viscosity engine oils will improve fuel economy and reduce greenhouse gases over 15W-40 engine oils.

“The new regulations, which are being phased in between now and 2017, impose different fuel-efficiency targets based on the size and weight of vehicle/equipment types. The full development cycle for motor oil, from the initial discussion to launch, is about five years.”


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