I'm getting a funny "sour" smell coming throurgh the internal air vents on my Mk4 Astra.
Some one stated it could be bacteria on the pollen filter. Has anyone heard of this , and if so, what actions did you take?
Ive been getting a smell through the vents, in turned out that the cap for the oil tank was loose, and small drops were leaking, what I could smell was burning oil
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