-------------- Original message from Jeff Waltermire <jeff_waltermire@ntm.org>: --------------


> When I had a BMW motorcycle I used oven cleaner (eazy off) to take a
> layer off of oxidized aluminum. It EATS aluminum so be careful where
> you use it. I used it to my advantage on the motorcycle. I don't know
> what it does to other metals but I would say use with caution.
>
> For pistons in Continentals (with major lead and carbon deposits) I have
> used a product called BH38 from Spartan chemicals. We just soaked them
> in it undiluted. An hour later we removed them and rinsed them with
> water and they were like new. BH38 is also great for removing oil and
> grease on the engines and hose it off with water. It doesn't hurt
> aluminum nor rubber. We have used it here for years with no problems.
>
> Jeff