Stricter emissions standards are coming in 2027, and with those will come new heavy duty oil categories. PC-12 is the American Petroleum Institute’s new “proposed category” for heavy duty engine oil performance.

And although we’re a few years away from seeing PC-12 in the field, manufacturers, oil providers and additive suppliers are already working to define the requirements for the next generation of oils.

To meet the new, stricter emission requirements, engine manufacturers must cut nitrogen oxide emissions by 75% and particulate matter by 50%. At the same time, the EPA is phasing in stricter greenhouse gas emission standards and mandating that aftertreatment systems have an increase in service life.

On this episode of The Dirt, Shawn Whitacre, senior staff engineer – engine oil technology at Chevron, joins host Bryan Furnace to answer the following questions:

What is PC-12?
How will PC-12 impact construction contractors in the field?
Does lowering phosphorous levels take the sulfur out of diesel?
Will PC-12 be backward compatible with older heavy equipment?
And will PC-12 change preventative maintenance routines?
If you plan on buying new equipment in 2027, it will be subject to the new emissions mandates. This episode is a must-watch for fleet managers and equipment owners trying to get ahead of equipment disposition cycles.

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In This Episode:
00:00 - PC-12 Updates & Overview
00:40 - What Is PC-12?
01:58 - How a New Engine Oil Is Made
03:00 - How Will PC-12 Impact Contractors in the Field?
04:30 - Lower Phosphorous Levels in PC-12
09:57 - Is Lowering Phosphorous Levels Like Taking the Sulfur Out of Diesel?
11:37 - Will PC-12 Be Backwards Compatible With Older Equipment?
13:29 - Will PC-12 Change Preventative Maintenance Routines?
15:44 - PC-12: More Updates to Come
16:29 - Final Thoughts