See also:

American Petroleum Institute (API) Engine Oil Identification Symbol
This symbol means that the oil has been certified by the American Petroleum Institute (API). The manufacturer only recommends API Certified engine oils. CAUTION! Do not use chemical flush ...

Grand Cherokee in the Market
In the '90s, the Grand Cherokee, Ford Explorer and other SUVs fueled a boom that changed the landscape of American roads. Things move quickly in the automotive world, though, and Grand Cherokee co ...

Materials Added To Engine Oils
Do not add any supplemental materials, other than leak detection dyes, to your engine oil. Engine oil is an engineered product and its performance may be impaired by supplemental additives. ...