Owners have noticed coolant leaking from the thermostat housing, intake manifold, water pump, and busted coolant pipes.
Coolant leaks are bad for your engine. Hopefully this surprises none of you. Antifreeze can mix with your car’s oil and create a toxic hell-stew that kills your engine. It can strip your combustion chambers of their oil and create excess heat and wear. It can also make a terrible mess of your driveway or garage.
Let’s look at some of the most common areas where coolant leaks happen in Porsche vehicles.
The Coolant Hose Slip
In 2014, the National Highway Traffic Safety Administration (NHTSA) opened an investigation into claims that a coolant hose fitting can disconnect from the engine block sending all the engine’s coolant spewing out in a moment that would make Old Faithful jealous.
The investigation was closed because NHTSA couldn’t tie any injuries or accidents directly to the problem and they said Porsche fixed the problem.
Try telling it to owners like this 2014 911 owner who said his hose disconnected at just 636 miles.
The Coolant Pipe Burst
Porsche was sued 8 times for using plastic coolant pipes that burst. Those lawsuits were eventually consolidated into one and Porsche agreed to reimburse 2003-2006 Cayenne owners for those defective pipes. Reluctantly.
Information about the settlement can be found at coolantpipesettlement.com but – and I hurt to burst your coolant pipe here – the deadline has passed.