Opti 43141 10W40 4-Cycle Oil - 34oz - 12 Pack

This 12-pack of Opti-4 SAE 10W40 four-cycle oil (34-ounce bottles, part number 43141) provides heavy-duty protection for a wide range of small engines that require 10W-40 lubrication. The oil uses Opti’s proprietary eutectic additive technology to create a hardened, ultra-smooth surface on internal engine components, reducing wear and promoting cooler, more efficient operation. Its formula supports easier starting, lower oil consumption, and long-term corrosion resistance during off-season storage. When registered and used exclusively, this lubricant qualifies applicable engines for the Opti-4 double-coverage internal parts warranty.