Planning to order some Tap Magic EP-Xtra later today.....if anyone knowledgeable has recommendations on tapping oil you're welcome to let me know if I'm messing up with the plan on that...
You'll probably be OK with that stuff, but the best I've ever used (and what I've continued to use) for tapping stainless is Moly-Dee from Castrol. It stinks like cow crap and will stain some materials (especially clothing) but works really well for tapping stainless.
I do a lot of machining on various types of stainless, so for me it's worthwhile to keep some Moly-Dee around for that.
