Panther SMX 30 is high alkaline TBN 30 trunk piston engine lubricant. It is part of the Panther high performance Marine family, formulated with top quality base oils and additives from international suppliers, to reduce emissions, improve fuel economy and engine cleanliness, prolong engine life, reduce the formation of sludge and protect engine burning high sulfur residual fuel. Efficient detergent dispersant additive system effectively controls insolubles.