Full Synthetic 4T Motorcycle Engine Oil 10W-40 is formulated using premium synthetic base oils, synthetic PAO & Esters coupled with an effective additive package for the ultimate protection of motorcycle engines. Full Synthetic 4T Motorcycle Engine Oil with PAO & Ester demonstrates excellent performance in the face of the increasing demands of motorcycle engines. Full Synthetic 4T Engine Oil with PAO & Ester is dyed a fluorescence yellow colour for easy identification.