Cooling/ radiator question

[cobram at juno.com]

Huw Powell <human747 at attbi.com> writes:

> but in general, as I learned on this list over the years, the oil 
> temp should get over 100 C in order to boil off condensation.

Could be, but the higher the operating temperature of the oil the more
oil breakdown there will be.  The closer the oil temp is to the
flashpoint, the more inclined it'll be to vaporize and burn off hotspots
such as cylinder walls and pistons.  The higher the temp the lower the
film strength too, which increases the chances of metal/metal contact
under heavy loads or stress.  This along with the higher temps leads to
oil thickening and deposits being formed, which are not good things.

Conclusion would be, for any car with high oil temps, always use a
synthetic over dino juice.  The synthetic oils are much better at
handling higher oil temps than regular oil.  

> oil is always hotter than the coolant when the engine is warm.

I'll have to look at he oil temp gauge the next time I drive the 200TQA.

BCNU,
http://www.geocities.com/cobramsri/

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