Windscreen Stain

Has anyone experienced this.  Tried various products to remove, but not shifting it, come to the conclusion its somehow inside the screen.  Thought I would throw this out there before spending time and money looking for a new screen.

Any thoughts help appreciated.
 

Haven't seen a oil stain per say, but have noticed a clouding that can occur between the laminations.

You might try a Razor blade to see if it is scrapable.

Have you tried methylated spirits to clean the screen?

I had misting on my last screen, this was due to age the screen was delaminating from the plastic. Had to buy a new screen. Not too expensive and clear vision restored.

Thanks will try meths on the screen 1st.  Then it's a new screen if that fails.
 

Welcome to the club first of all.

I don't suppose you have a photo of the problem?
Not sure you can but it would help to identify the issue!  

Can't see(!) many things staining glass. Acid and allsorts of chemicals and nasty stuff is stored in glass bottles because its so impervious to everything. Just use more elbow grease to remove.

If it's a white 'milky' stain in the corner or near an edge, its water that's got in-between the laminated glass.

Is its a rusty stain, has some welding spatter hit the glass and now the tiny bits of steel are rusting?