Hey guys, long time lurker, first time poster.
I have hung around the forums reading enough to finally pull the trigger on a 2000 Boxster a few months ago (March 2013).
After three weeks of driving, the engine overheated. I pulled over to notice that coolant had started bubbling over and there was the dreaded oil/coolant mix. It was towed to my mechanic immediately. My mechanic diagnosed it as a failed headgasket, and since he was going to be dropping the engine, I decided to go ahead with a full engine rebuild - new water pump, timing belt, IMS, head gaskets, thermostat etc.
After nervously waiting for a couple of months, the car came back to me (although the temp guage was still slightly high (to the right of the 0 in the 180). My mechanic said that it was fine, although the radiator fans were slightly weak, and had to be changed (waiting for parts to arrive).
After a couple of weeks of driving, I woke up one morning to find the coolant light blinking again. I realised the coolant reservoir was almost empty (although there did not seem to be any leaks on the garage floor). I topped up the coolant and continued to drive (temp still slightly high, but no overheating).
My brother then took the car out, and said that the coolant light started blinking again (so he stopped off to refill it with distilled water). By the time he got home, the engine had overheated, and I found to my horror that the radiator cap was off. The distilled water was also bubbling (presumably due to the high temperature).
So I topped up the coolant reservoir, let it sit for a day, and I came back from work to check on it. The coolant level seemed to have dropped a little bit, but no noticeable leaks under the car. I then started the car with the radiator cap off. The distilled water overflowed into the trunk area, but there was no bubbling this time.
Is it possible for the headgasket to fail again after having it replaced 3 weeks ago (and approximately 1000kms?) I love my boxster but these troubles (and $$$) are chipping away at my patience and I am thinking of selling it.
I trust my mechanic, although he is not a Porsche specialist.
Appreciate any advice the gurus on this forum can give.
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