Even
Even ignoring
@High Performance Lubricants comment, why would you bother mixing HPL with anything? You’ll never realize the true benefit of HPL, not from a protection, performance, or lifespan time.
If my choice was to mix HPL or run a “mere” straight shelf-stock oil from WM, again- you’ve at least got a fully-formulated oil that will work as certified. You’ve got no real guarantees when “home-mixing”, yet if something negative were to happen some people would point the finger of blame at HPL since it’s not “certified”. If you spent 65-75% of the full cost on HPL (or any exceptionally crafted oil FWIW, claim all the benefits by going 100%. My .02…