Guys, take a look! Is it an oil leak?

It's exactly the same as mine ... the year, configuration and even oil stains are very different! I washed the accelerator myself last time. By the way, I clamped the circlip in a vise and took the pipe down for cleaning! However, eggs are useless. This is a problem of oil-gas separation! But the whole car has oil stains, and the lack of oil is not serious! It is estimated that one liter of oil is enough for 8000 kilometers, so this is a