I know somewhere I read some posts on this but I sure can't find them.

My black engine cases are dull looking and need some cleaning.
What cleaner will bring some life back to the black powder coat finish ?
thanks,
mike

 

Think the dealer sells some S- 100, or something like that, seems to work good

 

This stuff. S100 engine brightener works excellent. I use it on all my black stuff usually only have to spray cases once a year and it's good

 

This is maybe the only thing you will ever find that H-D is actually cheaper than aftermarket.

http://www.harley-davidson.com/store/engine-brightener

 

Pig snott

 

simple green

 

Isn't Simple Green one of the the worst things to use to clean aluminum?

 

Use the S-100 cleaner so as to clean the cases with real good..........Then use the S-100 engine brightener as the next step............It'll make those black cases look like new.

You really do want to have the cases as clean and dry as possible before applying the brightener.

 

This is some great stuff. I've used it for years

 

THIS!
Bro nailed it on this one. Does not take much, simply amazing.
Not very often am I impressed with trying new detailing products, but with this one I was. I only use it maybe once a year or so, makes it look brand new.