Low-viscosity oil field trials pushing fuel economy
Low viscosity oil, however, is in many ways only half of PC-11, says Arcy. Simply, a new category was needed because of the need to increase fuel efficiency and decrease CO2 emissions, but also because of updated engine technology, he says.
The last engine oil category was finalized 10 years ago, Arcy said, and engines have changed a lot since then.
With the new category, though, manufacturers also wanted oils that could handle higher engine temperatures and with improved oxidation ability, along with improvements in preventing oil shearing and oil aeration.
Thinner oil can do all of this, Arcy says, along with the two core — and oft spoken about — functions of decreasing fuel consumption.