01-30-2007, 12:30 PM
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#1
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Registered User
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
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Quote:
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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
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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
Last edited by MNBoxster; 01-30-2007 at 12:34 PM.
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01-30-2007, 05:07 PM
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#2
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Registered User
Join Date: Sep 2006
Location: chicago
Posts: 3,510
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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
__________________
http://i34.tinypic.com/157yslk.jpg
"I couldn't find the sports car of my dreams, so I built it myself." ~F. Porsche
Gemballa springs::litronics::Eurotech 18s(275/225)::B&M::MOMO wheel::
exhaust cutouts::EVOcoldair intake::OEM smoked tails & sidemarkers::
colormatched bumperettes::Top Speed Pro-1 exhaust::
my cardomain/pictures page
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05-08-2007, 11:03 PM
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#3
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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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?
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house 
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05-09-2007, 11:15 AM
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#4
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Bump,MNBoxster,John V or dj your input is needed.
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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05-09-2007, 12:05 PM
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#5
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Registered User
Join Date: Jul 2006
Location: Where the Sewer Meets the Sea, CA. USA
Posts: 2,695
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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?
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05-12-2007, 05:46 PM
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#6
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Registered User
Join Date: Apr 2007
Location: Pasadena, CA
Posts: 59
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this is a good practice
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.
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05-13-2007, 11:07 AM
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#7
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Are any of you guys changing the washer to your coolant drain plugs while you are flushing the coolant?
__________________
-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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07-16-2007, 10:12 AM
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#8
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Registered User
Join Date: Sep 2006
Location: chicago
Posts: 3,510
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Quote:
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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?
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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.
__________________
http://i34.tinypic.com/157yslk.jpg
"I couldn't find the sports car of my dreams, so I built it myself." ~F. Porsche
Gemballa springs::litronics::Eurotech 18s(275/225)::B&M::MOMO wheel::
exhaust cutouts::EVOcoldair intake::OEM smoked tails & sidemarkers::
colormatched bumperettes::Top Speed Pro-1 exhaust::
my cardomain/pictures page
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08-19-2007, 09:44 AM
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#9
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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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?
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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