After a 45 min back road drive, observed some water dripping below engine and few red drops (not sure if its oil or something else). I have never seen this before on my 2006 C4 Cab which I own for last 3 years. Any clues?

 

From your pics, it looks like coolant. Is it slippery? Does it have a "sweet" smell? Is it similar to a sample from your coolant reservoir?

It looks like your water pump is on the way "out". Have it assessed and attended to before any long trips.

 

look like your WP is about to take a dump. Dealer just fixed mine for $1600

 

Coolant for sure. Agree on water pump. Take it to an independent. Wouldn't be surprised if it's original and if so, that is due for replacement.

 

Thanks all. Yes, it is original. Planning to replace.

 

Keep us posted; what's the mileage on the car?

 

@earranagu how mechanically minded are you? I have some basic skills and did this job in about half a day following the excellent DIY instructions on the forum here.

I bought the water pump kit from LN Engineering and replaced the thermostat "while I was there".

Bought the coolant from Sunset Porsche as that was the cheapest I could find.

Did the coolant fill with the Schwaben vacuum kit (which is good to have around for if/when you do a full coolant flush or third radiator).

Best of luck with whatever path you choose.

 

Does the reservoir tank show any signs of cracking? It's one of those "while you're in there" items to address with the water pump.

 

Yep, water pump for sure. It well go from this to a total dump in one drive or even just sitting in the garage.

 

Mileage on the car? Also, that's some of the worst looking coolant I have ever seen. Looks dirty.

I'm on my third water pump. The first from the factory went out and the dealership paid (thank you Porsche) to replace it under the original warranty.

I ultimately had to replace that one myself and did it in a couple of days with the aid of some of the DIY pages, herein. I'm at 122,000 miles right now. If memory serves me the first went at about 38,000 miles and I replaced number two at just about 100,000.

NEVER forget that Porsche got its start as an AIR COOLED engine manufacturer. They're still learning about coolant.