This video is a great example of two failures: 1) Hazardous Communications and 2) Emergency Response recognition.
There is no way he should have walked into the spill, much less into the spray to stop the leak. That was gasoline—NOT diesel; even if it had been diesel, his actions were still out of line. We will never know the training he received to recognize the risks he was taking and when a spill/release is no longer “incidental” and becomes one that requires an “emergency response.” By the way, the local FD pulled up just as the video ended.