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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?
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-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
