Lucas Oil 40702 SAE 20W-50 Synthetic Motorcycle Oil - 1 Litre

After alot of research on the Hammer Performance Big bore kit 1450cc for the Buell S1 Lightning 120+Bhp. My choice isn't available which is the Scheaffer 20w50 VTwin which I believe far exceeds the Amsoil... But here goes. Lucas 40702 VS Amsoil 20w50 Both Amsoil and Lucas offer top-tier, high-performance 20W-50 synthetic motorcycle oils, but they cater to slightly different preferences. Amsoil is generally preferred for long-term engine protection, superior shear stability, and extended drain intervals. Lucas (40702) is often chosen for immediate noise reduction, heat control, and high-zinc protection in air-cooled V-twins. Amsoil 20W-50 V-Twin Synthetic Oil Key Strength: Long-term synthetic protection and consistent viscosity retention under high stress. Performance: Consistently scores higher in shear stability, meaning it thins less over time compared to competitors. Extended Drains: Designed to last longer, making it better for extended drain intervals. Lubricity: Independent tests have shown Amsoil can offer high lubricity to reduce friction and wear. Lucas Synthetic 20W-50 Motorcycle Oil (40702) Key Strength: High-performance, heavy-duty formula often preferred for air-cooled engines and reduction of operating temperatures. Additive Package: Known for high levels of zinc (ZDDP), offering excellent protection for flat tappet cams. Noise Reduction: Many users report that Lucas reduces valve train noise and engine rattles faster than other oils. Availability: Generally easier to find in standard retail auto parts stores compared to Amsoil. Comparison Summary Feature Amsoil 20W-50 Lucas 40702 20W-50 Best For Long-term wear/Extended intervals Heat management/Noise reduction Shear Stability Excellent (resists thinning) High, robust formula Additive Load Balanced, premium High-Zinc (ZDDP) Best Engine Type Liquid/High-performance Air-cooled V-Twin Availability Often direct/specialty High (retail stores) Which One to Choose? Choose Amsoil if: You want to go 15,000+ miles between oil changes, ride in extreme heat, or want the absolute highest shear resistance for a high-performance engine. Choose Lucas if: You have a noisy air-cooled V-twin (like a Harley), want to lower engine operating temperatures, or want a high-quality oil that is easy to buy off the shelf. Both are 100% synthetic and suitable for wet-clutch applications.

Loads of quality oil for your £!

Works well in my classic Triumph Tiger 100A

Excellent product,

i bought it for my uncle and he loved it.

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If your like me and are tired of having to search for H-D dealers to buy your oil you will be pleased to know this oil works great and is available at most all auto parts stores. I was using Redline in my Harley but after moving there was no place to buy it without driving several miles. After searching Amazon I found this oil and Goggled it to get reviews and everyone praised it. So I ordered it and thus far it is every bit as good as Redline if not better. Later I discovered it was available at O'Reilly auto parts.

Works as it should!

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