[s-cars] Oil Temperature

[Tom Green]

I just know better than to touch any of this stuff when it's hot.    
But, I am sure that the oil temps are high enough to coke conventional
oil at 150ºC, and at that inlet temperature, it would be hotter in the  
turbo.  What was engineered to work just fine for 50K miles is
not necessarily just fine at 150K miles.  The advantages of synthetic  
are proven for the turbo applications, which is what I wanted to
convey.

I think Manny's OEM cooler can keep up with the RS2 if it is in good  
condition.  Most I see have coils almost filled with oily dirt on the
outside.  Insides can be nasty also, so I would check the present oil  
cooler out before opting to buy an aftermarket system.  Perhaps
he needs a bigger cooler.  I certainly don't want to suggest that  
Manny needs to "back off" on any of his sessions.  : > )

Tom

On Mar 24, 2009, at 6:44 PM, djdawson2 at aol.com wrote:

> I think the bearing section of the turbo is, without question, the  
> place where oil temps are highest... hence the after-cooling pump.
>
>
> -----Original Message-----
> From: Brett Dikeman <brett.dikeman at gmail.com>
> To: Tom Green <trgreen at comcast.net>
> Cc: Manuel Sanchez <manuelsanchez at starpower.net>; Scarlist <s-car-list at audifans.com 
> >
> Sent: Tue, 24 Mar 2009 2:29 pm
> Subject: Re: [s-cars] Oil Temperature
>
> On Tue, Mar 24, 2009 at 3:36 PM, Tom Green <trgreen at comcast.net>  
> wrote:
>
>
>
> > At the turbo, the oil probably reaches the flash point, so that  
> can't be good.
>
>
>
> I'm not sure what the relevance of flash points are, but the flash
>
> point of 15w50 Mobil1 is 235C; 455F.  The coke point of most
>
> synthetics is even higher.  In a water-cooled-center-section k24, you
>
> think the oil is heated by a differential of more than 100C from the
>
> coolant?  These cars were designed to work just fine on dino oil...
>
>
>
> One would think oil sees the hottest surfaces around the
>
> pistons/rings/cylinder wall.
>
>
>
> Brett
>
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