Anyone know what's in this stuff? I saw an older thread here about B-1, it was assumed it was ZDDP and some kind of lead. My dad has a 92 Dodge Spirit and he wanted to put an oil additive in it to see if it would quiet the engine down. I attempted to use my best BITOG knowledge to talk him out of it but decided that it's really not my place to tell someone not to do it. He picked out Bardahl B-2 over the blue bottle STP oil treatment and CD-2 Power Back engine treatment. So, my question is, what's in the B-2? Is it just an oil thickener or does it have any beneficial additives? Oh, we also checked the ignition timing on his car and found out it was off by 8 degrees.