DIY · Source review996 C4S2003 Porsche 996 C4S coolant leak and water-pump diagnosisDawg82 first read a sudden puddle as oil. A Rennlist reply pointed to coolant near the photographed area, and the owner later reported a mechanic's water-pump diagnosis and six hours of work including coolant flushing and replacement.Porsche911996Topics in the accountCoolant leakrennlist · Dawg82