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PR Newswire

Pennzoil Synthetics Keep Pistons Cleaner Than Any Leading Synthetic Motor Oil

HOUSTON, Aug. 15, 2012 /PRNewswire/ -- Today, Pennzoil® – America's most-trusted motor oil[1] – is announcing that Pennzoil Ultra™ and Pennzoil Platinum® keep pistons cleaner than any leading synthetic motor oil  – including Mobil 1[2]. ...