Sierra 9421CAT2 4-Stroke Synthetic Blend Catalyst Outboard Engine Oil, 10W30, Qt.

Introducing the Sierra 9421CAT2 4-Stroke Synthetic Blend Catalyst Outboard Engine Oil, the ultimate solution for your engine's needs. With its exceptional performance and advanced technology, this oil is designed to meet the requirements of modern 4-stroke recreational engines, making it the perfect choice for both engines with or without emission catalyst systems.

Engineered to exceed all 4-stroke requirements, including FC-W and FC-W Cat Compatible, this oil provides superior corrosion protection even under the most extreme conditions. Say goodbye to wear and tear with our industry-leading wear protection and deposit control, thanks to the innovative "ZDDP" anti-wear additive technology.

Not only does this oil prevent phosphorous depletion, but it also extends the emission catalyst life, ensuring your engine stays in top shape for longer. Rest easy knowing that our product is NMMA FC-W Certified, meeting the highest industry standards for quality and performance.

Specifically formulated for use in Mercury 4-Cycle Outboard Engines requiring 10W-30, this oil is the perfect fit for your engine. Its quart-sized packaging ensures you have enough oil to keep your engine running smoothly.

Made by Sierra, a trusted name in the industry, this product is backed by years of expertise and a commitment to excellence. Don't settle for anything less than the best for your engine. Upgrade to the Sierra 9421CAT2 4-Stroke Synthetic Blend Catalyst Outboard Engine Oil and experience the difference it can make in your engine's performance and longevity.