Mystery Leak????

[Skidzilla]

Had my Mk5 GTI about a month now.
When I first got the car I left it in the garage a couple of days whilest I got rid of my previous model. When I took it out of the garage I noticed a small puddle of clear oil based liquid(front near side), though I'm pretty sure it wasn't engine oil. I checked oil levels and for obvious leaks and noticed nothing out of the ordinary.
I came to the conclusion that the puddle was either from my old car or one of the kids meesing about with oil in the garage.
This theory seemed to bare out as when I started using the car regularly there was no sign of leakage.
Or so I thought . About a week ago I left the car unused in garage for a couple of days and the same oil based puddle appeared again??
This time though the leak continued to appear after  regular use.Ie use it during the day,garage overnight and freah leakage in the morning.

I've just returned from having an oil service and check from Parkway Derby and they can't find any kind of leak and suggest it's condensate from the AC.
I'm pretty sure its not as it's definately an oily consistancy.

Any ideas?

[joesgti]

yea take a sample of what it is and take it to the stealer. 

[Skidzilla]

Good idea

[182_blue]

Good idea

exactly how oily ?, i thought i had a leak on my old car, turned out to be road crap dripping down the arches onto the floor after a drive in the wet ?, just a thought

[Cass]

Sure it isn't the air con unit drain ?

Cass

[wlscullion]

I was convinced I had a leak but turned out to be condensation from AC , should not be oily though unless floor is oily. If in any doubt it may be this why not try driving without AC to see if it goes away.

[SteveS]

condensation wouldnt be oily surely!

id put a tub under and collect some of it. by the smell and feel you could tell if its just water or not....

not using the AC doesnt mean its condensation, it could be leaking something when it is ON. which if you dont turn it on, wont happen, doesnt prove its water.

[Skidzilla]

The mystery continues, as some of you suggested I put a bowl underneath last night and there was nothing this morning, not a drop??

When there is a  leak is definately not water or road dirt etc. It seems to be a machine type oil, very thin consistancy.

I'm starting to think it maybe an intermitant leak on the AC compressor which would contain oil.

Anybody had that problem?

[SteveS]

not me, but then i dont remember the last time i used the AC, mayb i should..

[CocoPops]

My AC is always on.

The car is set at a constant 18 and so it kicks in and out as needed.