Red truck on the road
PC-12 Countdown
Days
Hours
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Stay ahead of the pack with PC-12

Coming in early 2027, heavy duty diesel engine oils will be undergoing a category upgrade.

The Mobil Delvac™ lubricants team is here to help you navigate this change and use these new products to their full advantage, giving your fleet’s performance and efficiency a boost while reducing total cost of ownership.

What is PC-12?
Proposed Category 12 (PC-12) is a set of new regulations that requires heavy-duty engine manufacturers to meet more stringent emissions standards.
Who is developing PC-12?
US EPA and California Air Resources Board alongside lubricant suppliers and OEM manufacturers.
When does PC-12 take effect?
The anticipated first licensing date for PC-12 is January 1, 2027, to align with the introduction of the model year 2027 engines.
Where is this information relevant?
The United States heavy-duty engine market.
Why was PC-12 developed?
Due to advancement in engine technology and stricter emissions regulations that begin in 2027.

100 Years of innovation

Since our founding 100 years ago, and through PC-12 today, we’ve brought an innovative spirit and born for the grind attitude to high-grade lubricants.

Types of PC-12 products

The Mobil Delvac™ lubricants team is actively engaged in the testing and development of new PC-12 products, working alongside official entities and OEM collaborators to deliver a range of new products and formulations.

PC-12A (CL-4)
  • Backward compatible
  • Will keep tried-and-true equipment operating at the levels needed
PC-12B (FB-4)
  • Designed to enable optimum performance in cutting-edge equipment
As engine manufacturers begin to create a new generation of cleaner, more fuel-efficient diesel engines, they need a new generation of higher-performing diesel engine oils to protect them.
Bhaskar Prabhakar
North America CV Product Line Manager at ExxonMobil
As we develop PC-12 lubricants, we’re not working alone. We’re collaborating with our OEM partners, pushing the boundaries forward together.
Steve Jeter
OEM Technology Advisor
We feel really confident in the technological advancements of this product. In testing, we got to some absurdly low viscosities before there was much concern.
Rob Banas
OEM Technology Advisor

Key features of PC-12 compatible lubricants

75%
reduction in
nitrous oxide (NOx) emissions
50%
reduction in
particulate matter
800k
miles in service life after treatment, up from around 435k miles

How Mobil Delvac™ can help

Our experts recommend extending your current oil drain interval by 10-20% to see what your potential savings could be with our products.
$43,677.50
Estimated average total cost of annual oil changes
83.333hrs
Estimated annual labor hours
with Mobil Delvac™
$43,677.50
Potential annual cost savings
41.6667hrs
Estimated total annual labor hours saved

Learn more about what PC-12 means for your business

It’s never too early to plan ahead. Complete the form below to talk to one of our experts and discuss support you may need during the transition, along with access to the whitepapers previewed above to dive deeper into PC-12.

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