On 19/11/2017 12:00 PM, The Real Bev wrote:
> On 11/18/2017 04:48 AM, Xeno wrote:
>> 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.Â* This is SoCal.Â* No freezing, lots of
>>>>>> heat.
>>>>>> Â*Â*Â* Synth oil is nice, but expensive.Â* The concept of 0-20 oil,
>>>>>> although
>>>>>> the manufacturer suggests/demands it, is just alien.Â* 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.
>>>
>>> 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.
>
> No problem.Â* But I really want to know why 40-weight oil was a proper
> choice in HOT weather (80mph on a slight uphill across the Mojave in
> August, for example) a while back but now isn't even an option.
>
Engines have changed, emissions rules have tightened.

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Xeno