While STP makes excellent products that represent good value for your money ... Pennzoil produces a range of conventional motor oils, synthetic blends, and full-synthetic oils, such as its ...

Meanwhile, things get a tad more complicated when looking at synthetic and semisynthetic blends. Read more: Popular Synthetic Oil Brands ... semi-synthetic is good on your engine while also ...

Oil refiners produce several grades or blends of lubricating oils for use in automotive engines. Some are detergent formulations, while others are non-detergent motor oils. The basic difference is ...