On Friday, November 17, 2017 at 8:35:38 PM UTC-6, Xeno wrote:
> On 18/11/2017 12:33 PM, wrote:
> > 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.
> >
> Extremely low friction requirements.
>
> http://www.liqui-moly.com.au/using-t...ht-engine-oil/
>
> Higher viscosity oil (10W-60) delivers higher thermal stability where as
> lower viscosity oil (5W-40) minimises fuel consumption and emissions by
> reducing the energy required to circulate the oil. The correct viscosity
> is specified by the manufacturer and is designed to optimise the
> efficiency, performance and life of the engine.
>
> For example;
>
> http://www.liqui-moly.com.au/product...me-plus-0w-30/
>
> SYNTHOIL LONGTIME PLUS | 0W-30
>
> Special development for VW, Audi, SEAT and SKODA petrol and diesel
> vehicles with service interval extension (also pump jet engines).
> The fully synthetic low-viscosity motor oil from the Longlife 2
> generation keeps the engine perfectly clean. Exceeds the high Volkswagen
> test requirements. Reduces fuel consumption in one of the toughest
> consumption tests in Europe (CEC-L-54-T-96/ MB M 111) by more than 2.5%
> as compared with the specified reference oil. Fast cold-start oiling
> provides excellent engine wear protection during the start and warm-up
> phase.
>
> Intended use
> All-year oil for petrol and diesel engines with and without pump-jet
> technology. Specially developed for vehicles with service interval
> extension (German abbreviation: WIV) from Audi, Volkswagen, Seat, Skoda.
> Tested safe with catalytic converters and turbochargers.
>
>
> --
>
> Xeno

Refer to the owners manual. Do what it says.