Is the diesel tank metal or stainless steel?

[DrakeRemoray]

It’s shiny as heck! I did hit it with the air angle sander at 60 grit…. So is it straight steel or stainless?

 

[lynnmor]

I have never seen stainless rot away like that. See if a magnet sticks to it, some grades of stainless will not attract a magnet.

 

[mcfarmall]

Diesel won't rot SS, but a mixture of trichloroethylene and water will eat holes in 304 SS.

 

[GreensvilleJay]

A good application of JBWELD will fix that !

 

[Flintknapper]

Its not stainless.

 

[fried1765]

It’s shiny as heck! I did hit it with the air angle sander at 60 grit…. So is it straight steel or stainless?

View attachment 136368

Why would you even assume stainless?