From Newsgroup: rec.autos.tech

Seeing lots of youtube ads for this stuff, spray on rust and it dissolves
it,
leaves shiny metal surface and leaves a protective coating?

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From Newsgroup: rec.autos.tech

On 2026-03-01 00:02:54 +0000, UFO said:

Seeing lots of youtube ads for this stuff, spray on rust and it dissolves it, leaves shiny metal surface and leaves a protective coating?

There are a ton of similar products. Some of them will be useless and
some will work fine on very light rust, but don't expect to be able to
reapir heavily rusted areas - for that you'll need proper (and
expensive) panelbeating with patches and fillers.

I recently used a similar CRC product on some small areas of very light surface rust on may car and then repainted it with some touch-up paint
left over from a previous bigger rust repair by the panelbeater shop.
So far it seems to be fine, but it's early days yet.


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From Newsgroup: rec.autos.tech

On 2/28/2026 6:02 PM, UFO wrote:

Seeing lots of youtube ads for this stuff, spray on rust and
it dissolves it,
leaves shiny metal surface and leaves a protective coating?

Don't know that product but there are dozens in the area.

'Rust' or corrosion for our purposes is oxidized metal, that
is, your pretty grey steel is now porous brown iron oxide.
Removing those oxides is good, but nothing replaces the lost
metal. Worse, the remaining metal under that corroded layer
is usually porous, pitted, uneven so care should be taken to
apply a well adhered coating to clean metal after 'rust
removal'.

Worse with plated surfaces because oxides are bigger than
metals. That means blisters, holes, lumps, often under the
plate layer. Once the surface is compromised there's no good
topical solution- usually remove plating and corrosion then
either re-plate or paint.
--
Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971
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From Newsgroup: rec.autos.tech

UFO <techforce@nospam.gmx.com> wrote:

Seeing lots of youtube ads for this stuff, spray on rust and it dissolves >it,
leaves shiny metal surface and leaves a protective coating?

Is this a rust remover or a stabilizer?

Rust stabilizers can work very well at preventing from rust from spreading,
but they don't remove rust at all, but chemically bond with it to form a stable (usually black or brown) compound. You need to remove all of the loose surface rust before applying, though, and I have seen some cars that were entirely made up of loose surface rust stuck together.

On the other hand, there are a lot of new rust removers that have appeared
in the past couple decades. Some of them work as well as electrolytic removal, and aren't hazardous like phosphoric acid dips are. But they
remove rust and it's up to you to protect the new surface. And if all
that is left is rust there won't be anything there afterward.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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From Newsgroup: rec.autos.tech

UFO wrote:

Seeing lots of youtube ads for this stuff, spray on rust and it
dissolves it,
leaves shiny metal surface and leaves a protective coating?

Made in China. Meigline is a reseller / distributor for hundreds of non-related products.
Is likely a scam per: https://www.scamdoc.com/view/2496539
No SDS available on website.
No link to SDS.
No CAS number.
Company name and product not found on https://chemicalsafety.com/sds-search/ Without a readily available SDS it is illegal to sell this product in
the USA.

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