Might be a stupid question but if a lab sends you a SOOT 31 instead of SOOT .4%, how do you use the information SOOT 31? I presume it is 31ppm but how does that help?
Don't know either. I sent mine off to Blackstone today. On my website at http://www.LOSTKJs.com there are a few UOA's posted to compare against...so now I wait.