01-21-2007, 08:13 PM
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#1
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Quote:
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Originally Posted by MNBoxster
Hi,
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.
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Jim I have been thinking of flushing my coolant system even if I don't change out the oil cooler,just cause it has been in the car it's whole life. Now that whole process of running the car at 2,500 RPM for 10 minutes with the revs up to 5k and then running it at 2,500 RPMS for another 10 with revs to 5k again every 30 seconds,is that 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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01-21-2007, 09:54 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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when i had my cap problem, i flushed mine w the yellow bottle Prestone, said for all cars and all models.
and it was like 274359832758374 times cheaper than porsche coolant.
no problems with it
__________________
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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01-21-2007, 10:00 PM
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#3
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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 djomlas
when i had my cap problem, i flushed mine w the yellow bottle Prestone, said for all cars and all models.
and it was like 274359832758374 times cheaper than porsche coolant.
no problems with it
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Hi,
That was probably not the best thing. The coolant you describe contains silicates and these can form a gel reducing/blocking Coolant Flow, this problem has come up on several Boxsters.
In addition, this type of Coolant insulates the metal of the engine (read below) and causes a reduced heat transfer (not a good thing on an alloy engine). If it were me, I'd drain it and flush it ASAP and use the proper Extended-Life Coolant...
Happy Motoring!... Jim'99
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01-21-2007, 10:19 PM
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#4
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Registered User
Join Date: Sep 2006
Location: chicago
Posts: 3,510
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Jim, where can i purschase those other coolants you mentioned above?
a local napa/pepboys/autozone?
__________________
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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01-21-2007, 10:38 PM
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#5
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Quote:
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Originally Posted by djomlas
Jim, where can i purschase those other coolants you mentioned above?
a local napa/pepboys/autozone?
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The Texaco extended life coolant is available at Kragen.
__________________
-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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01-21-2007, 10:52 PM
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#6
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Registered User
Join Date: Sep 2006
Location: chicago
Posts: 3,510
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i dont know of a Kragen around chicago area....
damn just notied this is my 900th post 
__________________
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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01-22-2007, 04:29 AM
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#7
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Guest
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Dj, you should be able to find this stuff at any of the many auto parts chain centers in the Chicago area like Murray's Discount Auto.
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01-21-2007, 09:56 PM
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#8
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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 blinkwatt
Jim I have been thinking of flushing my coolant system even if I don't change out the oil cooler,just cause it has been in the car it's whole life. Now that whole process of running the car at 2,500 RPM for 10 minutes with the revs up to 5k and then running it at 2,500 RPMS for another 10 with revs to 5k again every 30 seconds,is that needed?
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Hi,
Yes, these run-in procedures are very important to insure that all air is purged from the system. You don't want an air bubble in say the head creating a hotspot and possibly burning a valve, cracking a piston, the head, and such...
Happy Motoring!... Jim'99
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