Finding the right oil reservoir for a 2-stroke outboard is essential for reliable lubrication, easy maintenance, and longer engine life. This guide highlights five compatible reservoir options, explains who each is best for, and compares features to help buyers pick confidently. Ideal for boaters, service pros, and DIY enthusiasts seeking OEM-like fit, high durability, and straightforward installation.
| Product | Best For | Key Benefit |
|---|---|---|
| FASWORX Oil Tank Reservoir Assembly | Mercury/Mariner 3.0L V6 2-stroke outboards (200–300 HP) | Direct OEM replacement with wide compatibility |
| Quicksilver 828361A2 2-Cycle Oil Reserve Tank | Mercury/Mariner 65–90 HP applications | Simple installation with common shop tools |
| Outboard Motor Oil Tank by Zyyini | General 2-stroke outboards needing secure ABS tank | Leakproof design with durable ABS |
| Spryflower Fuel Tank with Cap | 2-stroke engines needing portable oil reservoir | Tight seal and compact, robust ABS tank |
| Johnson/Evinrude/OMC 1.8 gal Remote Oil Tank Kit | OEM kits for older Evinrude/Johson/OMC builds | Includes mounting hardware and hose |
FASWORX Oil Tank Reservoir Assembly for Mercury Mariner 3.0L V6 2-Stroke
The FASWORX reservoir is designed for Mercury, Mariner, and Mercury Racing 3.0L V6 2-stroke outboards, spanning 200 HP to 300 HP. It’s a direct OEM replacement that mirrors original part numbers for straightforward installation. The tank is built from a high-impact, translucent polymer that resists UV exposure and withstands marine engine heat and vibration. This makes it a strong pick for boaters who value reliability and ease of fit. Best for owners seeking OEM-fit compatibility and a durable, translucent design to monitor oil levels at a glance. Caution: verify exact model compatibility before purchase to ensure a seamless match with your engine’s specifications.
Quicksilver 828361A2 2-Cycle Oil Reserve Tank
The Quicksilver reserve tank is translucent and designed for select Mercury/Mariner 65–90 HP 2-cycle jet and standard outboards. It emphasizes easy installation with common shop tools and clear visibility of fluid levels. Best for owners of mid-range 2-stroke engines who want a straightforward, fillable tank with familiar brand compatibility. Better for hobbyists who want a simple upgrade path without complex adaptations. Limitation: check your exact model and manual to confirm precise fitment before ordering.
Outboard Motor Oil Tank by Zyyini
The Zyyini oil reservoir uses a leakproof design with a tight sealing cap, preventing leaks during travel and operation. Made from ABS material, it offers high strength and longevity, resisting daily wear. It’s suited for 2-stroke outboards that require a robust fuel/oil storage solution with secure sealing. Best for anglers or long-range boating where spills would be problematic. Caution: ensure compatible mounting hardware and hose routing for your engine when retrofitting.
Spryflower Fuel Tank with Cap for Outboard Motor
The Spryflower tank emphasizes a leakproof design with a tight sealing cap to avoid leaks on rough waters. It’s built from high-strength ABS, offering durability for extended boating seasons. Best for boaters who need a portable, compact reservoir that still provides reliable storage. Choose this if you value a straightforward seal and sturdy construction, but verify capacity to ensure it meets your fuel/oil needs. Limitation: availability and exact fit can vary by model year and engine family.
Johnson/Evinrude/OMC New OEM 1.8 Gal Remote Oil Tank Kit
This kit targets Evinrude/Johnson/OMC builds with an 1.8-gallon capacity and includes mounting hardware, a 10-foot supply hose, and a primer assembly. It is a strong choice for OEM-style installations or when restoring an older outboard that requires a genuine kit. Best for users performing full system replacements where kit completeness matters. Caution: verify direct compatibility with your engine model and service manual, as some models require specific hoses or fittings.
A.A Gear Oil Lube Reservoir Bottle and Sensor
The A.A reservoir is designed for MerCruiser systems and replaces part numbers 806193A51 and 8M0075708. It suits owners upgrading gear lube reservoirs in MerCruiser configurations. Best for MerCruiser-powered boats requiring an OEM-replacement style reservoir. Limitation: ensure sensor compatibility with existing engine electronics if you rely on sensor readings.
Quicksilver Premium Plus 2-Stroke and Other Essentials
Though not a reservoir itself, Quicksilver Premium Plus 2-Stroke Synthetic Blend is a compatible lubricant for many two-stroke systems. It helps maintain peak performance and reduces corrosion in combustion, intake, and exhaust passages. Best for engines that rely on oil injection or premix systems, ensuring you have the right oil for your mix ratio and engine type. Caution: use only as directed by your engine’s service manual and the oil’s formulation guidelines.
Buying Guide: Key Considerations For Selecting A 2 Stroke Oil Reservoir
- Engine compatibility: Confirm the reservoir model matches your Mercury, Mariner, Johnson/Evinrude/OMC, or MerCruiser engine family and horsepower range.
- Installation fit: Look for direct OEM replacements or kits that include necessary mounting hardware and hoses.
- Material durability: ABS or high-impact polymers offer UV resistance and long-term wear resistance in a marine environment.
- Seal integrity: A tight-sealing cap reduces leaks; consider reservoirs with proven leakproof designs for rough seas.
- Capacity and compatibility: Ensure the reservoir capacity aligns with your engine’s lubrication needs and available space on the transom or engine mount.
- Maintenance visibility: Translucent tanks allow quick level checks without disassembly.
- Warranty and support: When available, OEM or brand-backed kits may offer better guidance for installation and troubleshooting.
Practical comparison questions
- Which reservoir is best for Mercury Mariner 3.0L V6 engines? The FASWORX unit is designed for a broad range of 3.0L V6 2-stroke models, including higher horsepower variants.
- Is a kit with mounting hardware important? Yes, kits like the Evinrude OEM and similar options simplify installation and reduce parts hunting.
- Should I choose a translucent tank? Translucent tanks help monitor oil levels quickly, reducing guesswork during trips.
- What about 2-stroke oil compatibility? When paired with the right reservoir, use the recommended 2-stroke oil formulation and follow your engine’s premix or injection guidance.
Frequently Asked Questions
- What is a 2-stroke oil reservoir used for? It stores the oil that lubricates the engine and mixes with fuel as required by the engine’s oiling system.
- How do I know if a reservoir fits my outboard? Check the engine model, horsepower, and the part numbers listed for compatibility with your make and year.
- Can I install an aftermarket reservoir on any 2-stroke outboard? Installation depends on mounting points and compatibility with the oil injection or premix configuration.
- Is a leakproof cap necessary?
- How do I maintain a reservoir? Regularly inspect seals, hoses, and mounting hardware; replace damaged components and verify oil levels before trips.