The modern serpentine belt is made of EPDM, which is a synthetic rubber. There are two problems with belt dressing on these.

QUESTION: During the past few months I've noticed a chirping noise from the engine of my 1999 GMC Yukon. Also, if I start the engine with either the air conditioner or defroster on, a much louder ...

Despite the complexity of modern vehicles, they still use technologies that have been a part of humanity’s toolbox since The Holy Roman Empire. Pulleys are believed to have been used in ancient ...