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Pennzoil gains Mack EO-N certification

HOUSTON, Tex. -- Pennzoil Long-Life heavy-duty engine oil has been approved for the new Mack EO-N Premium Plus spec...


HOUSTON, Tex. — Pennzoil Long-Life heavy-duty engine oil has been approved for the new Mack EO-N Premium Plus specification, one of the first to receive the new rating.

The Mack EO-N Premium Plus spec exceeds a number of the requirements of the new CI-4 classification from the American Petroleum Institute, according to Mike Monarchi, Pennzoil product manager for heavy-duty engine oils.

“While the CI-4 classification was developed specifically to meet the higher demands of lower-emission 2002 diesel engines, the requirements for EO-N Premium Plus go well beyond that and are the most stringent for diesel engine oil in North America,” says Monarchi. “We are extremely proud to have an oil which is among the first to meet these requirements.”

Monarchi explains the EO-N Premium Plus spec is stricter than the API CI-4 spec in four out of the seven engine tests and four out of the eight bench tests required to classify an oil. For example, the Mack T-10 EGR engine test, which in the EO-N Premium Plus spec includes requirements for liner wear, top ring weight loss, and end-of-test lead content, are all stricter than the API CI-4 requirements, Monarchi adds.

“Mack EO-N Premium Plus also requires some testing of changes in lead content which API does not,” he says.

In addition, Mack EO-N Premium Plus requires Volvo VDS-3 approval, an extended drain specification for Volvo engines. API CI-4 does not require this.


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