Quicksilver 2-Stroke Marine Engine Oil, 2.5 Gallon — Premium Plus Synthetic Blend, TC-W3

Quicksilver 2-Stroke Premium Plus Synthetic Blend is a NMMA TC-W3 certified engine oil formulated to protect and optimize mid- to high-horsepower outboard two-stroke engines, sold here in a 2.5-gallon container.

This advanced synthetic-blend oil is developed for oil-injected, carbureted and EFI two-stroke outboard motors that demand reliable lubrication under heavy loads, extended full-throttle runs and rapid acceleration. The proprietary, ashless dispersant chemistry helps limit carbon buildup and corrosion while preserving performance, making it suitable for both premix and oil-injected systems where TC-W3 approval is required.

How does this oil protect engines during hard use?

Premium Plus blends synthetic components with ashless dispersants to provide a stable lubricating film across moving parts even at high rpm and temperature. The formula is engineered to reduce abrasive wear and inhibit corrosive attack, extending component life without sacrificing performance.

• Wear-reducing additives for bearing and piston protection
• Ashless dispersants to minimize carbon and ring-sticking
• Corrosion inhibitors that protect internal surfaces in wet environments

Can I use it in my oil-injected or carbureted two-stroke outboard?

Yes — this oil is intended for oil-injected systems as well as carbureted and electronic fuel-injected (EFI) two-stroke outboards. It meets NMMA TC-W3 specifications, so it complies with the recommendations of major outboard and personal watercraft manufacturers that require TC-WII or TC-W3 oils.

• Compatible with oil-injection and premix setups
• Suitable for mid- and high-horsepower engines
• Meets manufacturer part number 858028Q01 for reference

What performance improvements can I expect on the water?

Regular use of this synthetic-blend oil helps maintain throttle response and steady power delivery by limiting deposit formation and preserving clearances. The result is more consistent performance over time, especially during sustained high-speed runs or heavy-load operation.

• Reduced carbon buildup improves combustion stability
• Cleaner exhaust system and fewer plug fouling events
• Stable lubrication preserves horsepower and responsiveness

Is this oil easy to use and source for service intervals?

The 2.5-gallon container supplies multiple top-ups or refills, simplifying routine maintenance for owners who run frequently or operate larger engines. Follow your engine manufacturer’s service intervals and mixing recommendations to maximize protection and component life.

• Large container minimizes refill trips and waste
• Clear labeling and NMMA TC-W3 certification for correct use
• Backed by Quicksilver’s long history serving marine OEMs

Who is this for: Boaters and marine technicians who operate mid- to high-horsepower two-stroke outboards or personal watercraft and want a factory-grade, NMMA TC-W3 certified oil in a convenient 2.5-gallon size. It’s aimed at owners who need reliable protection during high-speed runs, heavy loads, or extended time on the water and who prefer a trusted OEM supplier with a proven track record in marine lubrication.