Rust Primer I Was Thinking Of Applying Rust Converting Primer To My Calipers, But Theres No Heat Rating On The Can?

I was thinking of applying rust converting primer to my calipers, but theres no heat rating on the can? - rust primer

I am the painting is stirrup high temperatures because of the absence of primer weeks his link, too afraid, why no mention of video-rust color duplication and instructions about how the weather is certainly not the first or only under the grate, if theres? (I cleaned up the sanding and scraping, but it is a relic of the oxide layer)