#polymer

In early 2011, a class action lawsuit was filed against Porsche alleging that the company knowingly installed defective coolant pipes made of nylon into engines of Cayenne model SUV’s. Apparently, the pipes are very likely to fail prematurely resulting in serious engine damage. If the vehicle is out of warranty, customers end up spending big bucks to repair their engines and replace the coolant pipes. The replacement coolant pipes are made of aluminum.

George writes:

Sajeev,

I’m the owner of the dark green 1999 Honda Accord Coupe that appeared in prior editions of Piston Slap. Its paint is failing (clearcoat starting to peel and gray patches showing) after many years of sun exposure here in the Dallas area and it’s time to get a new car. I have a garage to protect the car at night, but my engineering career requires that my car spend the day out in the sun on a concrete parking lot. The good news is my cars never get exposed to road salt and snow, ice, frost, and morning dew are pretty much a non-issue for cars that spend the night in a garage.