Heavy Duty V-Twin Motorcycle Engine Oil by Spectro.

Superior motor lubricants designed specifically for use in Harley-Davidson V-Twin engines. Crafted from premium petroleum stocks combined with the most advanced anti-wear and anti-carbon additive systems available, Spectro Heavy Duty extends component life, reduces wear, and eliminates valve-sticking. Meets all known OEM warranty requirements.

• Exceeds API SF / SG – CD / CG-4