[Surly73]

Originally Posted by Conserve

I did not see attachment. Did you see this?

https://f10.5post.com/forums/showthr...20filler%20cap.

Mine has been doing ^^^ this ^^^ for many years. Scared the crap out of me the first time I pulled the oil fill cap and heard it. It sounded like a squeaky belt pulley so I was chasing it while under original factory warranty (which tells you how long ago this was on a 2011).