Acid in the Hopper

Hauled pecan hulls and left the inside of my wagon really gummy and stained. So has anyone used acid to clean out the inside of a hopper? I know some things will leave the inside kind of rough to the touch and hang the load up. Dont really want to do that but other than getting inside with a diesel rag and then metal polish I'm not sure how to clean the mess out. Any suggestions?

 

Yeah the nut. Haha well mainly the ground up shells. I need to restore the clean shiny look of my trailer. Has anyone put brighter on the inside?

 

So I'm going to go ahead and do it. Hope it works.

 

Very true. Now why didn't I think of that. Ha

 

Just to update, I hot water and soap washed it. Followed that with a serious brightener soaking that removed any and every stain. Rinsed the acid out real good and gave it a coat of spray on wax. Worked great, looks brand new inside and everything slides out nice and smooth.

 

Bet that's pretty nasty