Description
The Sierra 18-9530-3 TC-W3 Direct Injection Oil is a high-performance lubricant formulated for advanced 2-cycle marine engines, including direct injection systems. Designed to meet and exceed JASO, ISO, API, and NMMA TC-W3 standards, it provides reliable lubrication and protection in demanding marine conditions. This formulation helps reduce ring sticking, deposit formation, and exhaust port blockage, supporting easier starting and improved engine efficiency. Engineered for high horsepower outboards, it enhances performance and helps extend engine life, even when operating with lower quality fuels. It also features reduced aquatic toxicity compared to many conventional outboard oils, making it suitable for environmentally conscious marine applications.
Features
- Formulated for 2-cycle direct injection engines and high performance outboards
- Meets or exceeds JASO, ISO, API, and NMMA TC-W3 standards
- Helps reduce ring sticking, deposits, and exhaust port blockage
- Supports improved engine performance and extended engine life
- Reduced aquatic toxicity compared to conventional marine oils
- Designed and manufactured to meet and exceed all engine manufacturers warranties
- Exceeds JASO, ISO, API, and NMMA for advanced generation 2-cycle lubricants
- Significantly reduced aquatic toxicity to fish compared to other outboard oils on the market today
- Reduces ring sticking, deposit formation and exhaust port blockage allowing for easier starting
- Formulated to improve performance and extend engine life
- Ideal for today’s high horsepower outboards that demand maximum performance






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