Modern engine bays are filled with black plastic where bright cast aluminum once sat, and few parts symbolize that shift more ...

It might seem like a bad move, but there are two major reasons why automakers are fitting their cars with plastic valve covers instead of metal ones.

Q: I read your column on draining a water heater and it worked great. However, as I went to turn off the plastic drain faucet, it continued to drip. Is there a washer or something I can replace, or ...