Stange cooliant system leak, now not leaking.

[Zacatecaluca]

Hello All,

The car has been awesome 2006 987.1 30k miles. The other day i took it for a drive and stopped after about 150 miles for about 30miins when I came out, all my coolant was on the floor. I refilled the coolant and constantly checked the temperature, initially it edged up to 180F but then settled back down to 175F and stayed that way all the way home. I was driving gently and kept cheeking the coolant level. Since then I found that I needed to open the coolant needle valve and drive around for 3 or 4 days to bleed the cooling system. I'm on day 2 and the coolant level has gone down slightly. Whenever I stop I check the floor and there has been no coolant leak.

I am baffled, anyone seen this before?

Thanks.

[wizard]

A simple way to rule out one possible explanation is to check whether the part number embossed on the coolant reservoir cap has '04' as its last two digits.

[Zacatecaluca]

Cap number is 996.106 - 447.01

The cap is blue and there are no fluid marks under the boot carpet.

Edited September 24, 2018 by Zacatecaluca
More detail

[wizard]

You may have found your solution!

 

Buy a Porsche-original '04' cap.

Edited September 24, 2018 by wizard

[Zacatecaluca]

Pretty sure the cap is a genuine Porsche cap, it has the 'P in a triangle' symbol but probably 3 years earlier. I'm going to get the newer one.

Cheers mate! Much appreciated, thanks.

[wizard]

I'm sure your cap is genuine Porsche, but they had problems with the earlier ones.

Hope that fixes it.

It's a lot cheaper than coolant.