Flush Fuel Tank and Refill

What happens here

With the shut-off valve cleaned and reinstalled, the creator proceeds to flush the remaining old, contaminated fuel from the tank. He removes the main fuel line, allowing the fuel to drain completely into a bucket. Once empty, he refills the tank with fresh diesel fuel previously collected. He then reconnects the fuel line to the shut-off valve, ensuring all connections are secure and leak-free.

Goal: Replace contaminated fuel with clean, fresh diesel.