RPM metal treatment

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I know people who have it works pretty well for them. They have to reapply it every year. I like using liquid graphite. Holds up and looks really nice. I used it on my exhaust manifolds, brake master cylinder, front calipers and other odds and ends. It’s easy to touch up if you ever have to it just sprays on.
 
I use graphite on my manifolds but never tried it on brake drums. I was wondering if rpm would stand the heat of brake parts
 
I use graphite on my manifolds but never tried it on brake drums. I was wondering if rpm would stand the heat of brake parts
RPM holds up to heat but it wears off quicker so that’s why it’s reapplied more. The graphite works awesome on calipers and rotors.
 
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