Well two weeks later than Horizon, I finally got my Blackstone results. No surprise, Blackstone said no fuel dilution and Horizon said 3.2%! Interestingly enough, Blackstone showed my viscosity quite a bit lower than Horizon. Looking at previous threads on here, it appears that Blackstone viscosity numbers are often low, just like fuel dilution. Everything else on the wear metals looked almost identical but the additive numbers were different. The only reason I submitted a sample to both labs was I wanted a particle count done to see how my Fram Ultra oil filter did and Horizon refuses to do particle counts on used engine oil. Looks like the Fram did quite well! I will send another sample to both labs at next oil change and at same OCI because now I'm running a K&P reusable "35 micron" stainless mesh oil filter. I will be using Blackstone for another particle count to prove or disprove the naysayers of this oil filter's efficiency. Should be interesting. I will of course post both results in 2-3 months when I do the next oil change. I know this has been beaten to death on here, but if you are concerned about getting accurate fuel dilution results, DO NOT use Blackstone! Not sure if they are often off on viscosities also?
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