The API is aiming for a 2027 rollout of the new engine oil spec, which is meant to enhance performance standards.

January 1, 2027, will be the first license date for two new heavy-duty engine oil categories, if all goes as planned.

Preparing for EPA 2027? API’s new PC-12 spec (CL-4 and FB-4) introduces ultra-low viscosity 0W-20 oils and stricter emissions ...

US oil futures fall even as API inventory shows surprise draw in crude stocks By Investing.com - Jan 06, 2026 1 Investing.com -- U.S. crude oil futures fell further below post-settlement levels ...

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