[T2] Oil weight

[Jim Denton]

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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