Mercury – Quicksilver 20W-50 Full Synthetic Motorcycle Oil | Motorcycle Oil | Full Synthetic | 8M0058916

Overview

Every rider knows the feeling — when the engine settles into its rhythm and you can hear the smooth, steady heartbeat of a machine that’s well cared for. That kind of reliability doesn’t come from chance. It comes from choosing an oil you trust to protect the engine when the temperatures spike, the revs climb, and the road stretches on for miles. Quicksilver 20W-50 Full Synthetic Motorcycle Oil gives you that comfort. It’s the dependable layer of protection that lets you enjoy the ride, knowing your engine is shielded from heat, wear, and long periods of sitting between trips.

Key Features

• Full synthetic 20W-50 formulation for four-stroke motorcycle engines
• Excellent film strength to resist shear and oxidation in high-heat conditions
• Additives protect internal components from corrosion and wear
• Fast-flowing cold-start performance for instant protection
• Optimizes clutch feel and performance, even in wet clutch applications
• Meets or exceeds major motorcycle and powersports manufacturer warranty requirements
• 1 quart bottle
• Mercury Marine part number 8M0058916

Engine & Boat Compatibility

• Designed for four-stroke motorcycle engines of all sizes
• Ideal for air-cooled and liquid-cooled V-Twin engines
• Suitable for large displacement touring bikes, cruisers, and performance machines
• Compatible with engines that require 20W-50 full synthetic oil

Performance & Practical Benefits

What riders appreciate most about this oil is the way it keeps an engine feeling strong, even when conditions turn harsh. High-revving motorcycle engines generate extreme heat, and this formula holds its strength when lesser oils start to thin or break down. You’ll feel the difference in the way the engine pulls — smooth, tight, and confident — without that sluggish, overheated tone that can creep in on long rides.

Cold starts benefit too. Even after your bike has been sitting for a week or two, the oil moves quickly, coating critical parts and reducing wear from dry starts. That instant protection adds up over time, keeping engines healthier and extending their lifespan in real, measurable ways.

The clutch response is another standout point. In bikes with wet clutch systems, the wrong oil can cause slipping, dragging, or inconsistent engagement. This formulation is engineered to deliver a clean, predictable clutch feel — one that makes gear changes quick, steady, and satisfying instead of jerky or vague.

Whether you cruise casually or push your machine hard, the engine runs cleaner, stays cooler, and feels more responsive with each throttle roll.

Why Buy OEM

Choosing a genuine Mercury Marine part is choosing long-term peace of mind. Mercury’s oils are engineered and tested to withstand real-world stress — long hours, high heat, and unpredictable riding conditions. Aftermarket oils may promise similar protection, but OEM blends are designed to meet strict manufacturer specifications and deliver consistent performance every time. When you’re investing in the life of your motorcycle, it makes sense to go with the oil that was built to perform right from the first mile.

FAQ

Q1: Which engines does this oil fit?

It’s designed for most four-stroke motorcycle engines, including air-cooled and liquid-cooled V-Twin models.

Q2: What makes this different from aftermarket oils?

It’s engineered with stronger heat resistance and clutch-friendly performance, backed by Mercury’s OEM standards.

Q3: How do I know if this oil is right for my bike?

If your manual calls for a 20W-50 full synthetic oil, this is a reliable match.

Q4: Can this be used in saltwater or freshwater environments?

It’s intended for land-based engines but holds up well in humid or coastal conditions.

Q5: Is installation simple?

Yes — drain the old oil, install a fresh filter if needed, and fill to your engine’s recommended level.