{
  "id": 14709567,
  "title": "The Heavy-Duty Oil Standard Is Changing In January, What It Means For Your Fleet, Your Costs, And Your Equipment",
  "url": "https://urgent.news/2026/10/15/the-heavy-duty-oil-standard-is-changing-in-january-what-it-means-for",
  "topic": "business",
  "section": "Business",
  "published": "2026-10-15T13:28:30.000Z",
  "source": {
    "name": "FreightWaves",
    "slug": "freightwaves",
    "url": "https://www.freightwaves.com/news/the-heavy-duty-oil-standard-is-changing-in-january-what-it-means-for-your-fleet-your-costs-and-your-equipment"
  },
  "original_language": "en",
  "account": "The oil standard for heavy-duty diesel engines is changing in January 2027, according to the American Petroleum Institute. This new category, called PC-12, will replace the existing CK-4 and FA-4 categories. PC-12 is split into two subcategories: API CL-4 and API FB-4. API CL-4 is designed to be backward compatible, meaning it can be used in older trucks, while API FB-4 is for newer engines that require thinner oil for better fuel economy. The change is driven by stricter emissions regulations and the need for more efficient engines. The new oil categories are designed to improve fuel economy and reduce emissions, but they also require different engine configurations. As a fleet operator, it is important to understand these changes in order to make informed decisions about your equipment and maintenance plans.",
  "summary": "If your trucks have been running the same heavy-duty diesel engine oil since roughly 2017, whether you manage a hundred-truck fleet, run a small operation of a few units, or own the one truck you drive yourself, that oil is about to be replaced by something new, because the American Petroleum Institute is rolling out […] The post The Heavy-Duty Oil Standard Is Changing In January, What It Means…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}