IMO,scrap the pickle juice. It has lots of impurities that will leave spots on the blade. Just plain vinegar will work fine but do exactly what Pap said. Every trace of oil has to be stripped down.
This one came out pretty even. I had earlier experience with blotch spots on other blades. I would bet warming up the vinegar would speed up the process but I haven't tried it. It may lead to a better result. You don't have to agree but results speak for themselves.
I'll add rubbing it into the blade helps even it out. Just my experience and
02c.