Mercury – Quicksilver 10W-40 Synthetic Blend Oil | ATV/UTV/Motorcycle 4-Stroke Engine Protection | All-Season Performance | 8M0166408

Overview

Whether you’re carving through wooded trails, working a UTV across rugged terrain or leaning into the throttle on a backroad ride, your engine works hard — sometimes harder than you realize. Heat, dust, load and unpredictable conditions are the daily routine for powersports machines. The Quicksilver 10W-40 Synthetic Blend Oil (8M0166408) is built for riders who want to know their engine is safe no matter what the day throws at it. It’s the kind of oil that brings confidence — the steady, quiet reassurance that your machine will fire up smooth, run clean and stay protected through every mile, every season.

Key Features

• Formulated for 4-stroke motorcycle, ATV and UTV engines
• Synthetic blend engineered for high-performance applications
• Wet-clutch compatible to prevent clutch slippage
• All-season protection across wide temperature ranges
• Meets warranty requirements for Yamaha, Honda, Kawasaki and Suzuki
• Certified API SL and JASO MA/MA2 for engine and clutch performance
• One-quart bottle for easy maintenance and top-offs

Engine & Vehicle Compatibility

• Ideal for 4-stroke engines used in ATVs, UTVs, dirt bikes and sport motorcycles
• Works with wet-clutch systems and integrated gearboxes
• Compatible with leading Japanese manufacturers including Yamaha, Honda, Kawasaki and Suzuki
• Suitable for trail machines, utility rigs, sport quads, touring motorcycles, dirt bikes and adventure bikes

Performance & Practical Benefits

Off-road machines see everything — cold starts on frosty mornings, long climbs under heavy load, slow technical crawling and high-rpm bursts across open stretches. That’s why this oil is engineered to stay stable through it all. You’ll notice how smooth and steady the engine feels once the oil is warmed up, with a consistent film that cushions and protects even under harsh conditions.

The synthetic blend formula resists heat breakdown, so it stays strong when the engine is pushed hard. Dust, debris and heavy work can take a toll on internal parts, but the cleansing additives help keep contaminants suspended, allowing the oil to continue circulating cleanly. That means fewer deposits, less wear and longer engine life.

For wet-clutch setups — common in motorcycles and many ATVs — this oil’s friction characteristics are tuned to prevent slipping. You’ll feel the clutch engage confidently, with a tight, predictable response that holds steady under load.

Because it’s an all-season formula, it flows well in cooler weather while maintaining its protective strength when temperatures rise. Whether you ride year-round or seasonally, the oil adapts without losing viscosity or compromising performance.

Why Buy OEM-Level Quicksilver

When you’re relying on a machine to take you down trails, haul gear or carry you across unpredictable terrain, the oil inside the engine matters. Cheaper oils might get you started, but they often lack clutch compatibility, high-heat additives or proper certification for Japanese engines. Quicksilver builds this oil to strict OEM-grade standards, meaning it meets the specs your engine was designed for. If a fellow rider asked what to run, the honest recommendation is simple: choose an oil made for powersports engines, not repurposed automotive blends.

FAQ

Q1: Which engines does this oil fit?

It’s designed for 4-stroke motorcycle, ATV and UTV engines, especially those from Yamaha, Honda, Kawasaki and Suzuki.

Q2: What makes this better than basic motorcycle oils?

Stronger heat resistance, wet-clutch compatibility and all-season performance tuned for powersports engines.

Q3: How can I confirm it’s right for my machine?

Check your owner’s manual. If it specifies 10W-40 and JASO MA/MA2, this oil is fully compatible.

Q4: Can it be used year-round?

Yes — it’s formulated for all-season riding in varying temperatures.

Q5: Is installation straightforward?

Absolutely. Replace your old oil, pour in the new quart and you’re ready to ride.