I've also used Noodler's Bulletproof Black for the past 8 years, in a Lamy Safari and a variety of other pens. Never had any problems with it. Ditto on Bay Sta

I've also used Noodler's Bulletproof Black for the past 8 years, in a Lamy Safari and a variety of other pens. Never had any problems with it. Ditto on Bay State Blue though. Beautiful ink, but notorious for ruining pens in various ways.