On 18/11/2017 1:45 PM, wrote:
> 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.
>
Pretty much. There are critical additives in these oils for other
specific purposes as well. Deviate from Mfr's specs at your peril.

--

Xeno