Thanks!
I knew it was actually some form of rusting that was going on.
One of the sites I hit when I searched Perma Blue said to do 2 to 4 apps, and then, when you are as happy as you can be, RE-OIL it.
The oil supposedly evening out the results.
We’ll see. App #2 is on it now.
Yes, you should re-oil after the blueing process - any blueing process. Brownells sells a product for that too:
http://www.brownells.com/.aspx/pid=1086/Product/WATER_DISPLACING_OIL__AFTER_BLUING__RUST_PREVENTION
You could use WD-40, but NB that you should apply some other oil after the WD-40 has displaced the water and dries off, because WD-40 will dry off one day. That’s its job. CLP is as good as most anything out there, with the exception of very high-tech rust preventers.