Heavy Duty Trucking, July 2015
Inside an engine test cell at San Antonios Southwest Research Institute which helped develop all three of the new engine tests that define the wear performance parameters of the new PC11 A and PC 11 B oil service categories for heavy TWO duty applications OIL CATEGORIES ROLLING TO THE FINISH LINE Both will better protect engines and one will improve fuel efficiency By David Cullen Executive Editor dcullen@ truckinginfo com I ts not rocket science to split an API oil service category But it takes lots of chemical engineering to develop and bring to market not one but two new heavy duty motor oil specs in a mere five years It will take plenty of plain English to communicate what the resulting new oil products will be engineered to do and for which engines when they become available starting just about 18 months from now To start at the beginning what had been launched as the single PC 11 protecting them from wear factors will have to be formulated to withstand more heat And with both engine and truck builders looking for any fuel mileage edge they can get the category process put lowering oil viscosity under the scope too The upshot is the yet unfolding tale of two oils Back in late 2011 the industry was looking at putting a single new category in place by the start of 2016 Consensus eventually put first licensing of oils with API donuts during 2017 recalls Dan Arcy Shells Proposed Category 11 in the initial stage thus PC 11 was split into PC 11A and PC 11B categories once supplier stakeholders determined that two distinct API oil service categories would be needed to address the operating parameters of the next generation of fuel efficient engines as well as improving mpg and longevity for existing engines To meet the twin goals of decreased fuel consumption and reduced CO 2 emissions many next gen engines will run at higher temperatures so the oil 70 HDT JULY 2015 www truckinginfo com
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