For high-performance and racing two-stroke outboards—especially Mercury Racing carb, EFI, DFI, and Optimax engines (steel or Nikasil sleeved)—nothing is more critical than dependable, high-temperature lubrication.
 
Red Line Two-Stroke Racing Oil (SKU: 40603) is engineered specifically for extreme outboard race conditions, offering industry-leading protection, power gains, and internal cleanliness. Buckshot Racing #77 now proudly offers this elite lubricant in convenient 16oz bottles, packaged by the case (12 bottles) and drop-shipped directly to you in the USA.
 
This oil is built on 100% ester-based synthetic chemistry, giving it the highest film strength and thermal stability in its class. It clings to hot metal like no petroleum or even a typical synthetic can, making it ideal for the searing combustion temps in Mercury Racing, OMC, and Yamaha outboards running at full load and high RPM.
 
It’s compatible with both premix and oil injection systems, giving users flexibility regardless of setup.
 
Red Line's extensive technical research and field testing have proven this oil performs across a broad range of fuel-to-oil ratios—from 16:1 in high-revving, race-tuned engines to as lean as 100:1 in engines properly set up for reduced oil delivery.
 
This flexibility means builders and racers can tune for peak performance while still maintaining excellent protection. For Mercury Racing outboards running at 9,500+ RPM or more, ratios between 20:1 and 50:1 are commonly used, but Red Line’s exceptional lubricity gives room to adjust without fear of scuffing.
 
Red Line Two-Stroke Racing Oil has been dyno-proven to provide 3–5% more horsepower than competing oils in long-duration tests​​. This is not just peak horsepower—it’s sustained output with minimal power fade, due to reduced friction and zero carbon buildup in the exhaust ports or piston ring lands. Cleaner internals mean better throttle response, less plug fouling, and longer-lasting components.
 
According to Red Line’s internal testing and additive supplier testimonials, this oil delivers the cleanest piston and port conditions ever recorded in their labs. Unlike castor-based or low-grade synthetic oils that leave sticky combustion residue, Red Line burns ultra-clean, protecting your engine while maximizing efficiency and longevity—even under the strain of offshore or endurance racing.
 
Used successfully in Champ Boat and offshore outboard racing, this oil has shown half the wear compared to top competitor oils. Engines tested after extended high-RPM use revealed no ring or cylinder wear, and skirt scuffing was virtually eliminated—even in race conditions.
 
The clean-burning properties also make it ideal for Optimax-style direct fuel injection systems, where any buildup can restrict airflow and compromise performance.
 
Superior cleanliness in Micro Coke and piston tests
 
Stays stable above 475°F, resisting thermal breakdown
 
Low-smoke, ashless formula for clean combustion and less environmental impact
 
Rust and corrosion inhibitors suitable for both fresh and saltwater environments
 
Compatible with reformulated and oxygenated fuels
 
 
Whether you’re chasing wins in a Mercury 2.5 EFI drag boat, dialing in a Yamaha V6 for top-end runs, or running a high-output OMC Looper, Red Line Two-Stroke Racing Oil 40603 is the clear choice for long-lasting, clean, and powerful performance.
 
One (1) case of twelve 16oz bottles of Red Line Two-Stroke Racing Oil (40603): Premium Lubrication for Mercury, Yamaha, and OMC High-Performance Outboards are now available through Buckshot Racing #77, directly drop-shipped (USA Only) before your next race or river run.
 
Contact Mike Hill at +1-714-697-1716 or email mike@buckshotracing77.com for technical support.