Dear Scotty ,
While restoring 2 stroke engine components, I thought leaving them overnight in hot water and bleach (regretted it)was a good idea, however it had white spot residue and more oxidized. Any advice to remove it without polisher.
Contact between aluminum and reactive substances containing chlorine should be avoided. Sodium hypochlorite is the chemical name for bleach. Chlorine attacks aluminum. Good thing you didn't use hydrochloric acid, commonly called muriatic acid and used to clean concrete.
Use CRC Engine Degreaser next time. It's great, I used it clean a piston I found in a junkyard that had over 100k miles worth of engine gunk on it. The head of the piston was aluminum.
Yeah, people don't realize you're aluminum. Doesn't rush but it will oxidize. I would say get some high quality aluminum very light polish. They really light ones aren't going to hurt anything, get ones made, especially for aluminum. But of course if you wanted to try. I don't know if it would work on alumin or not but you can get carburetor spray cleaner a lot of times it'll take stuff off
more oxidized.
The main purpose of bleach, literally, is to be a strong "oxidizer".
https://en.wikipedia.org/wiki/Sodium_hypochlorite#Oxidation_and_corrosion
It's how it gets your clothes white... by oxidizing them.
Any advice to remove it without polisher.
Don't.
Other than looking unsightly, it won't hurt anything. Aluminum oxide (ceramic) forms a protective layer. polishing it will remove too much material and will make surfaces not flat. Plus , ceramic is very hard.
