Quote:
Originally Posted by sim1manson
I think the toughest thing CLR can remove is lime scale. I don't think it works well on rust(I've never seen it advertised as a rust remover).
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CLR has rust removal right in the name.
Calcium
Lime
Rust.
http://en.wikipedia.org/wiki/Calcium_Lime_Rust
CLR is okay if you can immerse your rusty parts in a container of CLR. But it does not cling well to parts on a vehicle, so its of limited use.
Rust-dissolving lubricants like "Liquid Wrench" dissolve rust, lubricate parts and cling to surfaces, and work better.