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Discussion Starter #1
I think I am smelling oil vapor in the cabin occasionally, car is running great in stage 2 with 31K miles, not using excessive oil, no leaks and no smoke....

A very faint smell of oil vapor in the cabin, any idea what is it ?
Curious on what does PCV failure look/smell like ?


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I have smelled something in my cabin about 3 times over the last 34k miles on my 2015 sti. Only when very hot outside and with ac running. Usually when stuck in traffic in 90 deg F + but it smells more like a fuel smell to me. I have asked the dealer and forums and never found anything it could be. Happened both with recirculating ac and non. Still at a loss.
 

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I took the car out for a 2 hr highway trip yesterday and I hadn't notice any smell.... I think I only smell oil vapor? or something in city driving somehow...
 
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