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This is the control
piece, which exhibits moderate rusting on the
surface and moderate rusting at the bottom, where it
meets the board. The dense inner part remained
rust-free.
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The
CRC Marine Heavy
Duty Corrosion Inhibitor is the product that
provided complete protection from rust. CRC leaves a
thick amber film when applied. In personal
experience, after a years time, it looked like there
was corrosion, but upon further inspection was
because of the grime picked up by the coating.
When I scraped the amber film off, I found shiny
bare metal underneath!
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BullFrog Electronic
Cleaner is a very light product that leaves little
residue. It resulted in spotty rusting on the top
surface, possibly where it was washed away by the
rain. However, the bottom did not rust at all,
suggesting that it provides some protection. |
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The
BullFrog Rust
Remover was slightly worse than the
Cleaner/Degreaser. It resulted in severe corrosion
throughout the piece and disintegration at the
bottom.
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BullFrog Rust
Blocker was one of the two products which provided
complete rust protection. The only drawback to using
Rust Blocker for most applications is that it does
not spray on. It comes out in thick spurts and needs
to be smeared onto parts. I suppose the property of
being a sticky substance helps it cling to the metal
and not get washed away. |
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The
PB Blaster is an
all-purpose product, like WD-40, which claims to penetrate stuck parts, prevent rust, and provide
lubrication. I claim that it fails to prevent rust
or provide lubrication. The steel wool treated with
PB Blaster exhibited surface rust similar to the
control piece and the BullFrog Electronic Cleaner.
There was no rust at the bottom of the PB Blaster
piece. Therefore, it appears to provide a small
degree of protection, but is too light a hydrocarbon
for use as a rust preventative.
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Boeshield T-9 is like
WD-40 or PB Blaster combined with a dissolved wax,
which leaves a protective film when the solvents
evaporate. It is easy to spray on because it is
light, it penetrates well, and doesn't leave too
much residue. The piece treated with T-9 showed
slight formation of rust on the top surface. There
was no rust on the bottom or in the middle. The
protection on the top surface probably got washed
away over time by direct rain. |
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The
BullFrog
Cleaner/Degreaser did not reduce rust at the
surface. Additionally, it resulted in rusting
throughout the steel wool and disintegration at the
bottom. Whatever cleaning agent is present in the
product must also attack the metal. This makes the
addition of Vapor-Phase Corrosion Inhibitors to the
product of dubious benefit.
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