Lucas Oil ''Plus'' Petroleum Oil has long been a preferred motor oil in the racing industry. The ''Plus'' is for the extra additives that are above and beyond those found in ordinary oils. Lucas Oil developed this line of premium oil to meet the extreme demands of all racing applications. It can withstand the extreme temperatures and fuel contamination of high performance vehicles. Lucas ''Plus'' petroleum oil can be used in everyday passenger cars and trucks, especially older engines where oil consumption is a problem.