Final recommendation
The cameraman-turned-host wrapped up the film with one more appeal for everyone to participate in the experiment. He reminded the participants about the experiment’s goal, which was to examine if WD-40 could be used as engine oil.
What is his last response to that question? “Sort of. Kind of. Not really. I wouldn’t recommend it.” Of course, this is just one person’s opinion. It’s conceivable that other experiments people have done in the past may have produced different results.