Pennzoil Long-Life engine oil has passed the testing required to meet the new CI-4 oil classification for heavy-duty diesel engines. The new specification
Pennzoil Long-Life engine oil has passed the testing required to meet the new CI-4 oil classification for heavy-duty diesel engines. The new specification was developed to meet the higher demands of lower-emission 2002 diesel engines that are expected to generate more soot and run at hotter temperatures than current diesels.
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