What constitutes "plummet"?  The book says use 20W50 down to about 10 F,
IIRC.  At any rate, I run it in the winter here in Oklahoma, no problem.
David Mc

On Mon, Jan 11, 2010 at 3:47 PM, craig cowan wrote:

> I'm not a ford man, but have a ford engine in my van. : )
> And it's got synthetic oil in it.
>
> If you don't use synthetic, 20W50 Castrol is what I always used, but
> found
> it can be quite taxing when winter temperatures plummet.
>
> -Craig
> '85GL turned WESTY
> BOSTIG in the back
>
> On Mon, Jan 11, 2010 at 3:48 PM, John Rodgers  wrote:
>
>> Mobil One 15W50 Synthetic.Been running this for 5 years now at least.
>> Suggest a Mann or Mahle filter for the oil.  I also use Redline MT 90
>> synthetic transmission oil for the manual tranny in my "88 GL. I
>> switched to this about 8 years ago due to some shifting problems. It
>> smoothed out tranny operation and I've had no troubles since.
>>
>> John Rodgers
>> Clayartist and Moldmaker
>> 88'GL VW Bus Driver
>> Chelsea, AL
>> Http://www.moldhaus.com
>>
>>
>>
>> Stephen Cebula wrote:
>>
>>> What motor oils you you all use out there?  A friend of mine keeps
>>> pushing
>>> synthetic oil.  He's a Ford man, and not familiar with Vanagons.
>>> What's the
>>> rap on that?
>>> Steve
>>>
>>>
>>>
>>>
>>>
>>>
>>>