Frankol 15W-40 CJ-4/SM Mineral oils are prepared using latest technology to show enhanced performance. These are designed to be used in the newer engines that are equipped with emission control technology. Also, theFrankol 15W-40 CJ-4/SM Mineral oils excellently optimize oil economy and prolong oil drain intervals, granting longer life to the engine and its critical components. These oils work great at high and low temperatures, combat soot and increase engine power, and are designed to work for both light and heavy duty engines.