Coolant Cap Poll

[litespeedp]

My 13 year old cap was somehow unable to keep a good seal on its place on the top of the plastic coolant tank in the rear trunk.I noticed a little moisture around the base; then I noticed "sweating" on inside the trunk area directly above the cap area.

My coolant level had been very slowly dropping.I read about all of this on this forum and found that an improved cap is available from Porsche.Look at the part number on your cap and search this forum for the number on the updated cap.I'm thinking the last numbers are 00 and my new cap has last numbers of 04.Research it and ask your dealer if they have the updated cap and the part number.I ordered the new cap form a Porches dealer.Maybe 20 bucks or so.

No more leaking or moisture on the inside bottom of the trunk lid.When you replace the cap,make sure your are not cross threading it or over tightening it.Good and snug is enough.When you get your cap you will see that it has a longer tube shaped base.

[southernstar]

litespeed is correct - the cooling system is supposed to be a 'closed' system and if the cap does not seal properly, it allows small amounts of steam to be released which will gradually reduce the coolant level. I replaced/upgraded my cap before my 3000 mile trip this summer as a precaution, even though there were no signs of coolant loss.

Brad