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Following another rugged series of road tests, from high-speed driving over the hot, dry plains of Texas to cold-weather, stop-and-go driving high in the Colorado Rockies, New Havoline® Special 10W-30 came on the market in 1955. This multigrade, all-weather motor oil was proven to outperform all five of the leading competitive brands in providing superior engine protection under all kinds of driving conditions.
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