coolant flush...step by step with pics

[MNBoxster]

Originally Posted by Travis

Quote from MNBoxster:

Porsche claims their coolant is Lifetime, but don't believe it. It is simply a silicate and phosphate free Glycol based coolant. This s/b changed every 5 years/150k mi. (whichever comes 1st) in order to provide maximum corrosion protection. It is the organic carboxylates which breakdown after this interval.

Instead of buying the super-expensive Porsche Coolant, Zerex Extreme Life 5/150, Texaco Extended Life, Shell Rotella® ELC Extended Life Coolant, UNI-GARD
5/150, Mercury Extended Life Coolant Anti-Freeze, all meet or exceed Porsche Coolant requirements and are much cheaper. Use of any other type coolant is not compatible with the system and can form a gel-like substance if mixed with the proper coolant which can then obstruct flow, create hotspots, etc. Hope this helps...

Happy Motoring!... Jim'99

Hi,

That's right - Porsche does state that their Coolant is Lifetime, but they fail to define what Lifetime is, well it's 5yr./150k mi., which to them (for marketing purposes) is Lifetime. But, Porsche doesn't produce their own Coolant, they re-label someone elses, Pentosin I believe.

There is currently no available Coolant, Consumer or Industrial, anywhere, at any price, which is chemically stable for a lifetime . If there were, every Car Mag and Enthusiast Forum would be touting it and the Mfr. would make a fortune.

Also, over time, metalic oxides, in form of scale, and bits of deteriorated hose, etc. will accumulate in the system, reducing it's efficiency. It's a good idea to flush the system regardless of the stability of the Coolant to rid the system of these particulates. Hope this helps...

Happy Motoring!... Jim'99

[djomlas]

or say its lifetime, and make cooling ststem be very ****************ty, so when it goes bad u have t fill it up w thier allroved brand for a small fortune, that works too.

its lifetime, too bad other stuff associated with it is not

[blinkwatt]

Now this whole using a hose and running water through the coolant lines,can it be done while the car is off do I have to turn the car on?

[blinkwatt]

Bump,MNBoxster,John V or dj your input is needed.

[CJ_Boxster]

If the rear of the car is on jackstands, would there be alot of left over old fluid stuck in the front radiators that wouldnt have poured out?

[Frank Patrick]

I do not care what Porsche says about "lifetime cooolant". Did mine today (52K) and it looked prety dirty. Now maybe looks have nothing to do with performance, but I do not want that crap in my car.

[blinkwatt]

Are any of you guys changing the washer to your coolant drain plugs while you are flushing the coolant?

[djomlas]

Originally Posted by CJ_Boxster

If the rear of the car is on jackstands, would there be alot of left over old fluid stuck in the front radiators that wouldnt have poured out?

once i drained a lot of it out, i just rolled car down on flat ground, and some more came out. its not that low so u can still tighten the bolt once on the ground.

[Paul]

Since we have a well we use a water treatment system that includes an iron and sulfur filter, a softner, and a reverse osmosis system (for drinking water only).

Is reverse osmosis produced water clean enough for our cars?