Lucas Oil Stern Drive SAE 25W-40 Inboard Engine Oil is designed to improve wear protection and increase catalyst life in newer inboards using catalytic converters. Lucas Stern Drive Inboard Engine Oil SAE 25W-40 is fortified with special synthetic additives that coat all moving parts to guard against rust, corrosion, and moisture during long storage periods.
It also has applications in 4-stroke outboards and 4-stroke personal watercraft. Can be used in automotive applications where API SM oils are called out for. Meets or exceeds MERCRUISER stern drive and inboard marine performance requirements. Meets or exceeds NMMA FC-W (CAT) performance.