Man, last year when I freshend my midget engine my machinist had been on me about using Total Seal Rings so I let him get me what he thought I should run (they where chrome mollys) & that thing had so much blow by and leak down it was silly,so I tore it down and put Total Seals back in it and on first fire up the dry sump would actually pull a vacume on the breather, I'll never put chrome mollys in anything again.