Kroil oil is a mechanics best friend. It smells similar to PB Blaster but reacts to rust and will even dissolve red loc tite . Don't know where to purchase since it's a commercial pennetrant. I have a gallon from when I worked at the airlines. I have a small lighter fluid can I use for it, and one can has outlasted 3 cans of PB Blaster. I have found nothing it won't penetrate. All I know is it is made in Tennessee.
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