Spring evening flight with crankcase gases? 

Knowledgeable people will tell you in the comments. Do the diesel locomotives of this 2M62 series have crankcase exhaust, like the 2TE10 diesel locomotives? As you can see in this video, near the second section of the diesel locomotive you can see something that looks like such an exhaust in the area of the fuel tank.
Meanwhile, it’s spring outside, the end of April. Cherry trees are blooming in the planting, the grass is turning green on the lawn
Diesel locomotive 2M62U-0069 with a train on the Grechany - Malinichi section
Khmelnitsky region, Ukraine
2018-04-24 19:19:27