Rusty fill nipple?

[SAMUEL.D.RYAN]

i know about that whole kaboom with oil thing, it's the outside is rusty, if i can scrub it off, what with??????

He means don't use oil as a lubricant to scrub the rust off or as a lubricate to make it easier to put a hose on the nipple.

 

[SamFlyZ]

Go get it checked out, dont recommend doing anything yourself...

 

[Tomm97531]

Thank you all for your help!