Stroll down the oil aisle of a typical auto-parts store and you’ll be confronted with a literal wall of lubricant. Doz ...

Is special high-mileage oil worth the extra price compared to a conventional lubricant? Z. George Zhang, Ph.D. and director of Valvoline Technical International thinks so. He said there are ...

Pennzoil produces a range of conventional motor oils, synthetic blends, and full-synthetic oils, such as its Ultra Platinum, High Mileage, and Platinum Euro lines. Havoline is a motor oil company ...