[DeTomaso] Oil temperature and wear

[Tomas Gunnarsson]

Gear oil isn't that much different from engine oil in viscosity. They use a different grading to avoid mixup.

Tomas

----- Original Message ----- 
From: "Dave Londry" <davel at emspace.com>
To: <kenn_green at yahoo.com>
Cc: <detomaso at realbig.com>
Sent: Friday, February 06, 2009 9:02 PM
Subject: Re: [DeTomaso] Oil temperature and wear


>I don't think 250F is magic Ken.
> It's keeping the viscosity at the operating temperature over some magic 
> number,
> which is a property of a ton of engine clearances and local pressures.
> His chart says maybe that's 10 to 15 cSt for that flavour of 911.
> 
> 15-50 keeps you above that line a lot longer, but it's harder to pump.
> Straight 50 was terrible when cold and gear oil would  break something 
> in the pump drive.
> dave
> 
> Ken Green wrote:
>> I found this article on oil temp:
>>  
>> http://www.elephantracing.com/techtopic/oiltemperature.htm
>>  
>> It looks like they think above 250 really accelerates wear.  It that a common view?
>>  
>> Ken
>> _______________________________________________
>>   
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