Sierra 9421CAT3 4-Stroke Synthetic Blend Catalyst Outboard Engine Oil, 10W30, Gal.

Introducing the Sierra 9421CAT3 4-Stroke Synthetic Blend Catalyst Outboard Engine Oil, the ultimate solution for your modern 4-stroke recreational engines! With its exceptional performance and cutting-edge technology, this oil is a game-changer in the world of marine lubricants.

Engineered to meet the requirements of both 4-stroke recreational engines with or without emission catalyst systems, this oil is the perfect choice for all your outboard, sterndrive, and inboard applications. It exceeds all 4-stroke requirements, including the prestigious FC-W and FC-W Cat Compatible certifications, ensuring top-notch performance every time.

One of the standout features of this oil is its superior corrosion protection, even under the most extreme conditions. Say goodbye to worries about rust and deterioration, as this oil provides industry-leading wear protection and deposit control. Its advanced "ZDDP" anti-wear additive technology prevents phosphorous depletion and extends the life of your emission catalyst, saving you time and money in the long run.

Rest assured, this product is NMMA FC-W Certified, guaranteeing its compatibility with Mercury 4-Cycle Outboard Engines requiring 10W-30 oil. You can trust Sierra, a reputable brand known for its high-quality products, to deliver exceptional performance and reliability.

Available in a convenient gallon size, this oil is perfect for those who require a larger quantity for their marine engines. Please note that it is sold in case packs only, ensuring you always have a sufficient supply on hand. Upgrade your marine engine's performance with the Sierra 9421CAT3 4-Stroke Synthetic Blend Catalyst Outboard Engine Oil. Don't settle for anything less than the best - choose Sierra and experience the difference for yourself!