Description
Mercury Premium Plus TC-W3 2-Stroke Marine Engine Oil, 1 Quart (858026K01)
Built for hard-running two-strokes, Mercury Premium Plus TC-W3 synthetic blend helps protect mid- to high-horsepower outboards against wear and corrosion while minimizing performance-robbing carbon deposits. Dependable lubrication under heavy loads and high RPM keeps your engine performing at its peak in demanding marine conditions.
Applications
- For oil-injected, carbureted, or EFI 2-stroke outboards (mid- to high-horsepower)
- Use in premix or oil-injected systems per the engine manufacturer’s guidance
- Meets NMMA TC-W3 requirements; suitable for most outboards and PWC specifying TC-W3
Shipping & Returns
Fast shipping from Wisconsin with reliable carriers. Have questions about compatibility or mix ratios? We’re here to help. Returns are easy—see our Return Policy.
Key Facts
- Brand: Mercury Precision
- Part #: 858026K01
- Type: Premium Plus TC-W3 Synthetic Blend 2-Stroke Marine Oil
- Size: 1-Quart (32 oz) Bottle
- UPC: 745061029804
- Country of Origin: US
- Category: Oils & Lubricants > 2-Stroke Oils
- Benefits: Wear & corrosion protection, minimizes carbon build-up, consistent performance at high RPM
- Compatibility: Oil-injected, carbureted, and EFI systems; outboards & PWC requiring TC-W3
- OEM Quality: Produced to Mercury Marine OEM specifications
What’s Included
- 1 × Mercury Premium Plus TC-W3 2-Stroke Marine Engine Oil, 1-Quart (858026K01)
Service Notes
- Follow your owner’s/service manual for correct oil type, premix ratio (if applicable), and maintenance intervals
- For premix engines, measure accurately; for oil-injected engines, confirm reservoir level and system operation
- Use fresh, clean fuel and approved stabilizer to reduce moisture and deposits
- Prop 65 Warning (California): Cancer
- Dispose of used oil responsibly according to local regulations


