Brown grime in Coolant reservoir
Discussion
In my 2013 A5 TFSI I noticed that my coolant reservoir was below the minimum, bought some G13 from the local Audi dealer and distilled water ready to top up. Today I took the reservoir cap off and noticed theres a brown grime/sludge around the rim of the reservoir opening, and peering inside it looks a bit brown. Attached some pics to better show this.
I've not topped up the coolant before and only had the car 6 months (bought from Audi dealer), but have heard a mixture of things of what this can be.
Do I need to get it flushed and start again with new G13, or am I ok to just top up with the G13/Distilled water mix?
I've not topped up the coolant before and only had the car 6 months (bought from Audi dealer), but have heard a mixture of things of what this can be.
Do I need to get it flushed and start again with new G13, or am I ok to just top up with the G13/Distilled water mix?
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