Ölschauglas (Neuter)

oil gauge (Neuter)

oil sight glass (Neuter)

oil-level sight glass (Neuter)

medidor de aceite (Neuter)

mirilla de aceite (Neuter)

mirilla de nivel de aceite (Neuter)

油位观察玻璃窗 (Neuter)

量油计 (Neuter)