Technical Mysterious Yellow Gunk on Battery

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Technical Mysterious Yellow Gunk on Battery

dank

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Popped the bonnet up today on my Grande Punto (1.4 Dynamic), only to spot the following on the car battery:

img20110206151358.jpg


What is this yellow substance, and is it harmful?

The battery is the original one from almost five years ago. I bought the car two months ago and it had a full ('Gold Care') service with a Fiat dealer last week, and they never mentioned it.

I did go for a lengthy car journey yesterday (200+ miles), if that's possibly the cause?
 
Is it on both terminals? looks like some type of anti corrosion spray,wipe it off & apply some vasaline to both terminals.
 
Is it on both terminals? looks like some type of anti corrosion spray,wipe it off & apply some vasaline to both terminals.

As far as I could see, it was only on the negative one.
 
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