boxster s getting "warm"

[stilov]

So I haven't owned it long, but when I first got it...all seemed fine.

I found a slight dribble from the waterpump...so I replaced it and put in a lower temp tstat while in there. Impeller was fine nothing chewed up.

Well I have been driving it this week (since my 996 is under the knife) I have noticed while I drive freeway, the needle stays at 180 or a hair under.

If I slow down for a while, or get stuck in traffic, the needle will move up to in between the 8 and 0 touching the zero.

Thats just seems like too much movement to me. (my 996 stays on the same spot no matter what)

I realize filling a boxster with coolant is tough, but I've followed "Pedros" procedure many times.

1. WHat do you guys think? air in the system or cooling fan not coming on?

2. Can I test the cooling fans with durametric?