‘Everything is full of that same gunk’: Ford mechanic shows what happens to trucks when you don’t regularly change the oil—and idle

Owning a car is expensive enough—but skipping key maintenance intervals for the sake of saving might end up making your initial purchase more costly. 

That’s the warning mechanics at @flyingwrenchesauto are sharing with drivers, at least. In a recent video, which has amassed more than 126,000 views, a worker there showed viewers a Ford truck in dire need of an oil change. 

The worker, who went unnamed, said the video served as “a little friendly reminder to change your damn...