quote:So you're saying then that Blackstone screwed up the TBN test not once, but twice? I am skeptical of your skepticism. The original bottle is gone but I'll see if they're willing to do a TBN test on another virgin sample, see what happens. Cheers, 3MP
Originally posted by TooSlick: So the idea that Mobil 1, 5w-30 has a TBN of 15.5 is not reasonable at all.