On Wednesday, November 8, 2017 at 2:48:52 AM UTC+8, The Real Bev wrote:
> I grew up on 10-30 or 20-40. This is SoCal. No freezing, lots of heat.
> Synth oil is nice, but expensive. The concept of 0-20 oil, although
> the manufacturer suggests/demands it, is just alien. We never freeze,
> we just have to worry about the oil thinning out when the ambient is
> over 100F.
>

I am more worried about the viscosity range: why do German "luxury/performace"
cars need 0W40 oils? That is expensive crap.