Liqui Moly's Motorbike 4T 15W-50 Street high-performance engine oil tailored for use in air-cooled and water-cooled four stroke motorbike engines. It has been specially developed for all-year use in normal to heavy-duty street, dirt and racing bikes, including quad bikes and scooters. Selected basic oils and high-quality additives ensure optimal lubrication, excellent engine cleanliness and impressive friction coefficients in all operating conditions. Liqui Moly's Motorbike 4T 10W-50 is thus ideally suited for use with and without a wet clutch. Many Japanese manufacturers prescribe lubricants of this viscosity for older bikes made in the 1990s. Ideally suited for use with and without a wet clutch.