Last oil change, I wanted an sn+ oil that's
ACEA A3/B3 with a better VI than Mobil1
10w30 HM (only sn+ A3/B3 I know of), so I
mixed that with Amsoil 5w30 (HTHS of 3.3,
almost A3/B3 spec, sn+, and lower 40C
viscosity). It's hard to guess EXACTLY
where the specs will land without doing a VOA,
but I figure it will be closer to what I want than
either one alone.
Maybe I will send in the mix to Blackstone to see
after all. If I do I'll post it.