Sea-Doo 4T 5W-40 Synthetic Blend Oil — OEM 2-Quart Pack (9779492) for High-Performance 4-Stroke Engines

This factory-original Sea-Doo oil is a synthetic blend engineered for modern 4-stroke engines used in personal watercraft, ATVs, side-by-sides and other powersports machines. It’s supplied as a two-quart quantity and carries the OEM part number 9779492, so you’re getting the same specification intended by BRP/Sea-Doo for service and maintenance needs. Although this part is listed as non-current, it remains a genuine OEM option when compatible with your engine’s requirements.

Why choose a Sea-Doo OEM 5W-40 synthetic blend for my 4-stroke engine?

This 5W-40 synthetic blend balances cold-start flow with high-temperature stability to protect bearings, pistons and transmissions in powersports applications. Its additive package focuses on antiwear and corrosion resistance suited to wet or saline environments where PWC and off-road machines operate.

• Viscosity suited for varied temperatures — easier starts and stable film at operating heat.
• Antiwear additives reduce component wear under heavy loads and high rpm.
• Corrosion inhibitors extend life against moisture and salt exposure.
• OEM formulation ensures compatibility with Sea-Doo-specified service intervals.

How much oil is in this package and how is it supplied?

The product is sold as two (2) one-quart containers, giving you a convenient service quantity for many mid-size powersports engines. That format makes routine oil changes faster and simplifies storage of a factory-match fluid for future maintenance.

• Package contains two quarts (2 x 1 US qt).
• OEM part number: 9779492 for accurate ordering and reference.
• Alternative larger format: 1 US gal (9779493) if you need more volume.
• Factory-original product — not an aftermarket blend or generic substitute.

Will this oil work with turbocharged or supercharged powersports engines?

Yes — the formulation is intended for high-performance applications, including turbo and supercharged 4-stroke engines commonly found in modern powersports vehicles. Its enhanced thermal stability and antiwear chemistry help maintain protection under elevated boost and higher operating temperatures.

• Designed for high-performance on-road and off-road 4-stroke engines.
• Suitable for turbocharged and supercharged setups where compatible with OEM specs.
• Helps protect transmissions where shared oil service is recommended by the manufacturer.
• Engineered to resist breakdown under repeated high-load conditions.

How does this oil protect against rust and corrosion in extreme conditions?

The Sea-Doo blend contains corrosion inhibitors that form a protective barrier on internal metal surfaces, helping to limit rust when machines are exposed to moist air, freshwater or saltwater spray. Combined with detergents and dispersants, this reduces deposits that can accelerate corrosion or impair lubrication.

• Premium anti-corrosion additives shield bearings and gears.
• Detergent chemistry helps keep surfaces clean to prevent acidic buildup.
• Formulation maintains protective film even in humid or saline environments.
• Recommended for powersports use where exposure to water and elements is frequent.

Who is this for: This Sea-Doo OEM 4T 5W-40 synthetic blend is aimed at owners and technicians servicing 4-stroke powersports machines — especially Sea-Doo personal watercraft, ATVs and side-by-sides — who want a factory-specified oil. It’s appropriate for riders who demand a product designed for high-performance and corrosive environments, and for anyone preferring OEM-labeled fluids for warranty, maintenance records or parts compatibility. Verify compatibility with your engine model and service manual before use.