Hi there my son has 2007 a3 2.0 tdi sline he went to check his coolant and he saw what looked like a filter floating in the expansion tank but he said he has never seen this before just wondering if anybody has any info many thanks SORRY FOR THE STRANGE QUESTION.
audi a3 expansion tank
- Thread starter darrenvalleys12
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"Coolant Expansion Tank with Silicate Repository
The coolant expansion tank contains a silicate repository. Silicate is used to protect the aluminum components in the coolant
system from corrosion. There are silicates in the G13 coolant, but they are used up over time if the engine is subject to high
thermal loads.
To compensate for the silicate consumption, silicate is taken from the repository and added to the coolant. The silicate
repository provides additional protection against corrosion for the aluminum components in the coolant system over the entire
lifespan of the engine. "
From here: http://forums.ross-tech.com/showthread.php?8529-Found-these-swimming-in-coolant-reservoir
The coolant expansion tank contains a silicate repository. Silicate is used to protect the aluminum components in the coolant
system from corrosion. There are silicates in the G13 coolant, but they are used up over time if the engine is subject to high
thermal loads.
To compensate for the silicate consumption, silicate is taken from the repository and added to the coolant. The silicate
repository provides additional protection against corrosion for the aluminum components in the coolant system over the entire
lifespan of the engine. "
From here: http://forums.ross-tech.com/showthread.php?8529-Found-these-swimming-in-coolant-reservoir
sorry for late reply but thank you very much it calmed my son down as he was have in kittens.
