Lucas Synthetic Blend 2-Cycle Marine oil has been specifically formulated to address the performance requirements of water cooled 2-cycle outboards and personal watercraft. Our product is fortified with our unique Lucas additive chemistry and an ash less detergent inhibitor package to minimize spark plug fouling, pre-ignition, and ring sticking. Mix ratio is 50:1 and is recommended for use in pre-mix or direct injection systems. NMMA TC-W3 certified (RL-13125P).