Ölschauglas (Neutro)

oil gauge (Neutro)

oil sight glass (Neutro)

oil-level sight glass (Neutro)

medidor de aceite (Neutro)

mirilla de aceite (Neutro)

mirilla de nivel de aceite (Neutro)

油位观察玻璃窗 (Neutro)

量油计 (Neutro)