[Boxtaboy]

Originally Posted by jakeru

I've topped off my coolant tank a couple times since I've picked up my 2001 Boxster base, a couple years ago. Previous owner I think provided receipt of the expansion tank being replaced right before I got the car, along with a new OE "Blau" brand (but not genuine Porsche) cap. Ive noticed no evidence of leaking or evaporated coolant crust down below. Since the cooling system is such a big capacity, and may be difficult to get all the air bubbles out, I figured perhaps it may just be necessary to top off very infrequently. I can't really say the coolant level has completely stabilized, however. I try to not remove the cap more than is necessary. Never had any performance problem with the cooling system. Not sure if this helps, but for what it's worth...

Thanks, this sounds like what I'm going thru with my tank too. Will see if things change I guess.