Quicksilver 2-Stroke Engine Oil for Outboards & PWCs — 1 Gallon, TC-W3 Premium Protection

Quicksilver Premium TC-W3 2-Stroke Engine Oil is a full-strength, ashless conventional oil formulated to lubricate and protect 2-stroke outboards, PWCs, snowmobiles, motorcycles and other small engines.

Designed to meet NMMA TC-W3 specifications and Mercury Marine OEM guidance, this 1‑gallon Quicksilver oil is for total-loss 2-stroke systems and premix applications. It balances deposit control, corrosion protection and low-temperature flow so engines run cleaner and stay protected across the seasons. Below you'll find concise answers to the most common buyer questions so you can decide if this oil fits your machine and riding conditions.

How does this oil help during routine operation?

Quicksilver Premium TC-W3 delivers consistent lubrication to moving parts in 2-stroke engines while dispersing combustion byproducts to reduce deposit buildup. It’s ashless, which helps limit residue on spark plugs and inside exhaust passages, and its additives fight rust in vulnerable metal surfaces.

• Reduces spark plug fouling and ring sticking by controlling deposits
• Neutralizes combustion acids that can cause corrosion
• Formulated to disperse soot and varnish for cleaner intake and exhaust passages

Will this oil work in cold weather or low-temperature starts?

The all-weather formulation is engineered to remain effective down to -13°F (-25°C), supporting cold starts and short-run conditions typical for recreational marine and powersports use. Lower-temperature flow helps ensure oil reaches bearings, piston skirts and crankshaft areas quickly at startup.

• Rated for use down to -13°F (-25°C) for dependable cold-weather lubrication
• Good for short runs and frequent starts common in recreational use
• Helps limit wear during initial seconds of cold operation

Is this oil compatible with my Mercury or other OEM outboard?

Quicksilver Premium TC-W3 is produced to Mercury Marine OEM specifications and is suitable for Mercury and Mariner outboards, plus many other OEM 2-stroke engines that call for TC-W3 oils. For best results, always follow the equipment manufacturer’s service recommendations and premix ratios.

• Meets NMMA TC-W3 standards and Mercury Marine OEM guidance
• Recommended for premix use in lower-horsepower, carbureted engines
• Compatible with most 2-stroke marine and powersports engines requiring TC-W3

How is this oil used and what maintenance practices should I follow?

This conventional 2-stroke oil is intended for total-loss lubrication systems where oil is mixed with fuel or injected and subsequently combusted. Use the manufacturer-recommended oil-to-fuel ratio, check spark plugs and exhaust for deposits periodically, and store oil in a cool, dry place away from direct sunlight.

• Use correct premix ratio or fuel-injection settings per engine manual
• Inspect spark plugs and exhaust ports for deposit trends after service intervals
• Store sealed container in cool, well-ventilated area to preserve additives

Who is this for? Quicksilver Premium TC-W3 2-Stroke Engine Oil is aimed at boaters, PWC riders, snowmobile and motorcycle owners, and small-engine operators who need a reliable conventional TC-W3 oil that’s OEM‑backed for marine use. If you operate a Mercury/Mariner outboard, other TC-W3-specified 2-stroke engines, or maintain carbureted, lower-horsepower machines that require premix lubrication, this one‑gallon Quicksilver formula offers widely compatible protection and deposit control for recreational and seasonal use.