file Try CLR to Remove Scale, Rust, and to Restore Reservoirs Under The Hood

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28 Sep 2015 10:10 #1536 by oestek
oestek created the topic: Try CLR to Remove Scale, Rust, and to Restore Reservoirs Under The Hood
I've heard that the household cleaner CLR is a good product for cleaning up rusty & scaly things without hurting paint.



We recently picked up a '70 Buick that is in all original paint, but there is some rust and scale under the hood. This was a perfect test car to try out some CLR and see what it does.

Sorry for the camera phone photo quality.

This was an informal test, as we just mixed up some CLR we had in a 50/50 ratio and scrubbed it on with a plastic brush like the bottle says.

The results were interesting, as you'll see in the photos.

This is an overall "before" shot of the engine bay.



Here's a close-up of the area we tested first. Note the rust, dirt, scale, and other yuck on the panels and hardware.



Here's the same panel after a light scrub-brushing of CLR followed by a water rinse. The CLR is an acid product, so it needs to be thoroughly rinsed to neutralize when done.



We know that the area is still wet from water, which changes appearance of the black paint, but it looks much better. The big surprise was the bolt on the leading edge of the core support holding down the radiator shroud… it looks new.

We worked a few more areas with some good results, but the washer reservoir ,the brake booster and master cylinder cap really changed for the better. Go back to the original photo to see the difference.





Check out the vacuum motors for the heater box before and after.






The valve covers cleaned up a little, but this was only about 10 minutes of contact time with the CLR.

The coolant bottle came around as well. This had many rust stains in the crevices, and looks much whiter. Longer time soaking in the CLR would make this think look new, and we all know what a pain these are to renew. We're confident that we could remove the cap and soak it in CLR and it would be snow-white.



Overall, we're happy with what we've learned. We did not expect this stuff to completely restore our engine bay, but we wanted to test it out. With minimal effort, certain parts really look better, especially the plastic bottles.


More info:

www.jelmar.com/CLRbasic.htm

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12 Oct 2015 15:00 - 12 Oct 2015 15:00 #1596 by Qball
Qball replied the topic: Try CLR to Remove Scale, Rust, and to Restore Reservoirs Under The Hood
Pretty cool. I will give that a whirl on my engine bay.

-Mike
Last Edit: 12 Oct 2015 15:00 by Qball.

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