ash material in fire pit of Silver Genesis

[GGross]

I noticed as ash like material in the bottom of the fire pit. The fire pit while still in sound shape does have some pitting but I figured that was from it reacting with all the piled up crud that was in it when I got it. So I'm wondering what it's reacting with just the air? It's almost like cigarette ash. I washed with a power washer no chemicals just water.

Maybe I just need to spray it down with vegetable oil to get a coat of something on it. Or start using it to build up grease layer but it needs burner, FB's and drip pan so I'm just not sure if it's worth investing in if it is pitting

 

[timothy]

You got this used? If so, than the previous owner could of used oven cleaner which is caustic to Aluminum.

Tim

 

[LMichaels]

That is a,aluminum oxide. Scrape the grease funnel out with a plastic scraper, wire brush the inside and power wash it all. It'll be fine