Coolant Change necessary??

[moresquirt]

I have a 2006 Boxster S with 150000 Kilometres (approx 90000 miles)
It has the original G-12 pink coolant.The coolant looks clean and fairly clear.No particles
or discolouration. I have changed the water pump once a few years ago but poured the coolant that came out back into the coolant tank.I made sure the catch tray was clean and used a fine filter when pouring it back in. This was at approx 110000 kilometres
and no issues with leaks anywhere since. I have not checked the ph of the fluid as no one in my area carries the test strips. Should I just keep driving it? I called 2 dealers which I dont use lol,one states to change at 7 years other says no change necessary if fluid still appears pink and clear. Worth noting is I had to change the water pump on my 05 Toyota Rav 4 at 165000 kilometres ,it was original and had a red Oats Toyota coolant in it which still looked pretty good BUT I decided to change the thermostat also and when I removed it was rusted pretty good.So I guess the anti rust chemicals in the fluid were no longer working.Im not sure if the Toyota Red from back then is the same as the Porsche G-12. The Porsche stuff definitely feels slimy and thick.I think there's something in it to helpl lubricate the water pump bearing seals .Any advise would be great.

[JFP in PA]

"Lifetime" coolant usually last around 5-6 years, and ages like oil and needs to be changed. How it looks is irrelevant, and if you lack the tools to properly test it, changing it is your best option.

[Gianni at Pelican Parts]

Hey moresquirt,

We do sell a few different Coolant testing devices and strips on the site.

A coolant change isn't that expensive though and is not a bad idea for peace of mind.