illuminous yellow liquid
Discussion
Steve Devaney said:
Angelus said:
Steve Devaney said:
clorenzen said:
It is probably coolant. Have a taste test. If the taste is sweetish its coolant.
If it is salty then the neighbours cat has been in 
I nearly spilled my beer then!
I was going to have a cup of tea but on the other hand...
It could be washer fluid? Perhaps? But then again, I've had a few!
Old thread resurrection...
Did the OP ever work out what the yellow fluid was? I have the same coming from the rear area of my 911 997.2. The fluid is bright yellow, watery and odourless.
I put the car away slightly wet recently and that is when I first noticed it some days later (probably a couple of tea spoon's worth). The car went away very dry at the weekend and I have noticed a very small amount has leaked since.
I took the car to my local Porsche indy (Northway) who service the car and they have had a look and couldn't see any sign of a leak and said none of the fluids in the car are as I described (yellow, watery and odourless). I also looked underneath whilst at Northway and it appeared all very dry (although I had just driven for 30 mins on dry roads).
It seems as though perhaps residual water or condensation is running through something causing the colour. I'm not worried about condensation but specifically why it is bright yellow and whether this indicates a problem?!?
Thanks in advance.
Did the OP ever work out what the yellow fluid was? I have the same coming from the rear area of my 911 997.2. The fluid is bright yellow, watery and odourless.
I put the car away slightly wet recently and that is when I first noticed it some days later (probably a couple of tea spoon's worth). The car went away very dry at the weekend and I have noticed a very small amount has leaked since.
I took the car to my local Porsche indy (Northway) who service the car and they have had a look and couldn't see any sign of a leak and said none of the fluids in the car are as I described (yellow, watery and odourless). I also looked underneath whilst at Northway and it appeared all very dry (although I had just driven for 30 mins on dry roads).
It seems as though perhaps residual water or condensation is running through something causing the colour. I'm not worried about condensation but specifically why it is bright yellow and whether this indicates a problem?!?
Thanks in advance.
Chris-55tad said:
Old thread resurrection...
Did the OP ever work out what the yellow fluid was? I have the same coming from the rear area of my 911 997.2. The fluid is bright yellow, watery and odourless.
I put the car away slightly wet recently and that is when I first noticed it some days later (probably a couple of tea spoon's worth). The car went away very dry at the weekend and I have noticed a very small amount has leaked since.
I took the car to my local Porsche indy (Northway) who service the car and they have had a look and couldn't see any sign of a leak and said none of the fluids in the car are as I described (yellow, watery and odourless). I also looked underneath whilst at Northway and it appeared all very dry (although I had just driven for 30 mins on dry roads).
It seems as though perhaps residual water or condensation is running through something causing the colour. I'm not worried about condensation but specifically why it is bright yellow and whether this indicates a problem?!?
Thanks in advance.
I think he went with the air conditioned cat answer......Did the OP ever work out what the yellow fluid was? I have the same coming from the rear area of my 911 997.2. The fluid is bright yellow, watery and odourless.
I put the car away slightly wet recently and that is when I first noticed it some days later (probably a couple of tea spoon's worth). The car went away very dry at the weekend and I have noticed a very small amount has leaked since.
I took the car to my local Porsche indy (Northway) who service the car and they have had a look and couldn't see any sign of a leak and said none of the fluids in the car are as I described (yellow, watery and odourless). I also looked underneath whilst at Northway and it appeared all very dry (although I had just driven for 30 mins on dry roads).
It seems as though perhaps residual water or condensation is running through something causing the colour. I'm not worried about condensation but specifically why it is bright yellow and whether this indicates a problem?!?
Thanks in advance.
Some more research and I found the below answer down the back of the internet...
95 per cent of the exhaust systems built today are made up of iron alloy and galvanized steel. Exhaust pipes are made of either iron or stainless steel. Heat shields are made of galvanized steel and galvanized steel uses zinc as a rust inhibitor.
Zinc, when hot and in the presence of iron and a catalyst, creates yellow zinc oxide in the form of crystals. The connection is the catalyst - salt water - or compacted snow with road salt mixed in. If the snow is able to touch the exhaust heat shields and the exhaust pipes at the same time, the chemical reaction between the two dissimilar metals creates the bright yellow crystals.
I'm no chemist but I first noticed this after the car went away following a drive with some slush / snow on the road, so this could be plausible. Interesting that the OP was in January and another in the Monaro forum was in December which both correlate with salt on the roads.
95 per cent of the exhaust systems built today are made up of iron alloy and galvanized steel. Exhaust pipes are made of either iron or stainless steel. Heat shields are made of galvanized steel and galvanized steel uses zinc as a rust inhibitor.
Zinc, when hot and in the presence of iron and a catalyst, creates yellow zinc oxide in the form of crystals. The connection is the catalyst - salt water - or compacted snow with road salt mixed in. If the snow is able to touch the exhaust heat shields and the exhaust pipes at the same time, the chemical reaction between the two dissimilar metals creates the bright yellow crystals.
I'm no chemist but I first noticed this after the car went away following a drive with some slush / snow on the road, so this could be plausible. Interesting that the OP was in January and another in the Monaro forum was in December which both correlate with salt on the roads.
Except the Porsche heat shields are made of aluminium.
If your coolant is red, as it normally is for these cars, then coolant it is not. Look in the expansion tank to determine. If yellow then it is almost certainly coolant - "watery".
Otherwise would be aircon lube, but this is oil not "watery". It is, however, usually marked with a yellow fluorescent dye to make leaks very evident under UV light.
If your coolant is red, as it normally is for these cars, then coolant it is not. Look in the expansion tank to determine. If yellow then it is almost certainly coolant - "watery".
Otherwise would be aircon lube, but this is oil not "watery". It is, however, usually marked with a yellow fluorescent dye to make leaks very evident under UV light.
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