[T2] Oil weight

[Jim Denton]

The same tests are going to be used for any motor oil, but some synthetics
may actually be thinner than their label implies.  If you were to buy a
straight 50wt synthetic oil then it would likely test out close to a
25w50.  The same is true with some of today's straight weight dino oils, a
straight 30wt might actually test out to be a 10w30.  This just represents
the change in oil refining over the years since the oil viscosity data was
originally quantified.

On Mon, Dec 7, 2015 at 12:41 PM, <accessys at smart.net> wrote:

>
> that chart is for dino oils
> synthetics are on a different scale
>
> mine flows like water at any temp could put it in freezer and pull it out
> and it will still pour like water in fact have poured some in to top off
> oil when it is well below freezing with no flow issues.
>
> Bob
>
>
> On Mon, 7 Dec 2015, Jim Denton wrote:
>
> Date: Mon, 7 Dec 2015 12:36:31 -0700
>> From: Jim Denton <2thingswild at gmail.com>
>> To: Bob carroll <accessys at smart.net>
>> Cc: Richard Jack <jackvw at me.com>, "type2 at type2.com" <type2 at type2.com>
>>
>> Subject: Re: [T2] Oil weight
>>
>> A 50wt oil is almost twice as thick by the numbers at 212*F than a 30wt
>> oil.  Review the chart below, even though the lines seem to merge on the
>> graph the chart under the graph shows that the 50wt @212*F has a viscosity
>> of 19 sCt verses 10 sCt for 30wt.  The 50wt will need to be heated to
>> around 240*F before its viscosity will drop to 10 sCt. Yes by the time
>> engine oil reaches 300*F there is very little variation from one oil to
>> the
>> next, as they are all very thin.
>>
>> FWIW these days I run 5w-40 Mobile 1 in all my engines VW and otherwise
>> unless the engine is pretty ratty. No qualms with a 15w50 or 20w50
>> synthetic if you really need it.
>>
>> On Mon, Dec 7, 2015 at 11:44 AM, <accessys at smart.net> wrote:
>>
>>
>>> Mobil 1 15W-50 has the most Zinc (ZDDP) of any readily avaliable oil and
>>> is often recommended for older cars.  it is what I run in my bus
>>>
>>> ONLY the 15-50 has the high levels of Zinc not the other weights
>>>
>>> Bob
>>>
>>>
>>>
>>> On Mon, 7 Dec 2015, Richard Jack wrote:
>>>
>>> Date: Mon, 07 Dec 2015 10:53:54 -0600
>>>
>>>> From: Richard Jack <jackvw at me.com>
>>>> To: type2 at type2.com
>>>> Subject: Re: [T2] Oil weight
>>>>
>>>> This is a low mileage motor.  It is broken in.  What weight synthetic
>>>> would I run?
>>>>
>>>> Richard
>>>>
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>>>>
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>>
>
>