Hi Vorlauf. I was thinking a couple of the WearCheck fanboys would see the question. I’m assuming the “method” is Gas Chromotography (GC), but that doesn’t mean the standard is the same as Oil Analysers’. Not saying OA’s is the best, more just trying to determine if the results are directly comparable. The good news is you aren’t using Blackstone (maybe quite good except for their fuel dilution methodology / accuracy). I too will be interested how much (if any) your current 0w30 fill will thin with use. What viscosity does Honda say to use (would also be interesting if the US version states different oil than the JDM version)?