Can You Put 15W50 In A Japanese Bike?

Can You Put 15W50 In A Japanese Bike? The new AMSOIL 15W-50 Metric Synthetic Motorcycle Oil is ideal for a wide variety of motorcycles from BMW, Ducati, Yamaha, KTM, Triumph and Royal Enfield. This product is ideal for European and Japanese motorcycles requiring a 15W-50 for engine and transmission service. Can I use 15W50 instead