[s-cars] Oil Temperature Question-How Hot is too hot

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I think there is some misconception on the stock Audi oil cooler and  cooler 
upgrades.  All Audi turbos since the urq, come with a 100C oil  temp 
thermostat built into the oil filter housing.  Assuming you use the  stock fittings for 
a larger cooler, there should be no difference in achieving  normal engine 
operating temp than any Audi turbo with a stock oil cooler.
 
The problem I have with integral oil coolers, is overheat is shared between  
fluids, not isolated.
 
I also have a couple aftermarket sandwich plate style filter adapters for  
oil coolers, both of them have changeable temp thermostats in them.
 
The idea of using a 100C thermo, is that the cooler will always allow the  
oil to get hot enough to vaporize the water in the oil.
 
HTH
 
Scott J
 
 
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