> So oven cleaner is probably some strong acid. Sulphuric acid maybe?
As mentioned, the active ingredient is lye (aka caustic soda, aka sodium
hydroxide). But it's only 5-10% of the product.
Note that it will attack and discolor aluminum; although the damage isn't
too severe if you flush it off promptly. Make sure it can't get trapped in
cracks or under rivets, etc. though, as it will eventually turn aluminum to
powder.
The "Red Devil" pure lye sold in grocery stores is no longer made, but
supposedly Lowe's carries a product called "Roebic Crystal drain opener"
that is pure lye. Should do a real number on grease, as lye will combine
with fatty substances to form soap. But it's also good at removing paint
and skin.
Randall
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