Zerex???

[rick3000]

I paid $25 for the Porsche coolant, and it's actually 2 gallons since it's a 50/50 mix with distilled water. That's $50 to replace all your coolant, without any guesswork as to what may or may not work, every 5 years. It may not be the best, but I know it works and if something goes wrong the dealer can't say, "Oh, well thats not Porsche coolant, so it's not our problem."

[urban_legend]

Great stuff... I now have a minor in coolantology. But here is the catch - the reason to use porsche coolant (or Dex-Cool) is to make sure it matches the OEM coolant already there. BUT, on my inspection there was green coolant in the tank.
So clearly not the pink porsche coolant - but what is it?

Is the Dex-Cool green? Any quesses?

So my conclusion is it is probably more important to get all the old green coolant out than what I put in afterward. The problem seems more to be mixing coolant types than what brand you put in. (Havoline, Chevon and Zerex all market Dex-Cool.)

[ekam]

http://e-partssales.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=P&Product_Code=00004330105&Category_Code=986maint

"Recommended for use in all 50 states and Canada. This is latest version. It's red in color, and replaces the green fluid. They are both compatible and can be mixed."

[blue2000s]

Originally Posted by urban_legend

Great stuff... I now have a minor in coolantology. But here is the catch - the reason to use porsche coolant (or Dex-Cool) is to make sure it matches the OEM coolant already there. BUT, on my inspection there was green coolant in the tank.
So clearly not the pink porsche coolant - but what is it?

Is the Dex-Cool green? Any quesses?

So my conclusion is it is probably more important to get all the old green coolant out than what I put in afterward. The problem seems more to be mixing coolant types than what brand you put in. (Havoline, Chevon and Zerex all market Dex-Cool.)

There's no standard on the color. Porsche's branded coolant was pink at one time and yellow at another. Don't go by color.

http://www.renntech.org/forums/index.php?showtopic=9350&mode=linear

[urban_legend]

If I have a 2001 Boxster and the coolant looks green and not in the pink or yellow family. Then it must have been changed (by previous owner) to a non-porsche coloant.

By color alone, I cannot determine chemical makeup - but probably phosphate free (most are) however likely not silcate free.

Best game plan - have it professional flushed. I have tried twice and can only get about 2 gallons out. So some coolant seems to always remain in the system.

[JFP in PA]

Originally Posted by urban_legend

If I have a 2001 Boxster and the coolant looks green and not in the pink or yellow family. Then it must have been changed (by previous owner) to a non-porsche coloant.

By color alone, I cannot determine chemical makeup - but probably phosphate free (most are) however likely not silcate free.

Best game plan - have it professional flushed. I have tried twice and can only get about 2 gallons out. So some coolant seems to always remain in the system.

An '01's coolant would have been green from the factory, they switched to the pink stuff a couple of year later................ It is probably the factory fill. But after 8 years, you should consider changing it.

[husker boxster]

Originally Posted by urban_legend

Best game plan - have it professional flushed. I have tried twice and can only get about 2 gallons out. So some coolant seems to always remain in the system.

Just be sure you take it to a place that understands Porsche's require special fluid, not garden variety antifreeze. You don't want to end up with oatmeal in your engine b/c someone made a mistake.