[200q20v] FW: oil temps

Beer, Jerald jbeer at BooseCasey.com
Sun Oct 21 23:16:59 EDT 2001

  My car runs about the same as yours. Highway is at the second line, which
I estimate to be 90-95 degrees C. The cooler opens around 80 degrees C as I
can see the oil pressure drop upon opening. It will run a little hotter if I
am in a lower gear which does not minimize rpm for a given speed. 
On the track in south Florida I have seen temps in excess of 140 degrees C
(Mobil 1 15-50) even with vented fenderliners. The oil cooler is just not
big enough to handle the heat. I will be getting a bigger cooler. One lister
suggested old 911 cooler with some minor mods and was kind enough to send
pix. I did try the 2B mocal setup but saw NO improvement. When I told them
it did not work, they attempted to troubleshoot; after no improvement they
issued me a refund-class act IMHO. 
91 200qa

The 90 temp you described sounds a bit cool to me.  I've heard that we =
need temps slightly exceeding 100 degrees C in order to boil off =
moisture that condenses in the engine crankcase after cool-down.  This =
scenario makes sense to me and the oil cooler thermostat is designed to =
adjust accordingly.  Problems occur with petroleum based oil when it =
gets too hot (140 degrees C) and begins to break down, this break-down =
temperature is even higher with current synthetics. =20


At 10:47 AM 10/18/2001 +0000, you wrote:

>Hi  !
>Has anyone had problems with oil temp in 20V Audi?
>The temp meeter has index points for
>60 C    |    130C
>Normally the meeter should stay near the mark
>  |      I think this is 90 C.
>Under extreme load the temp can rise up to 130C
>If you have had problems, was it the
>Oil Filter housing thermostat
>(in ETKA spring 049 115 437
>   and thermostate piston 035 115 429  ) ??
>Or was the reason just sticking oil temp thermostat piston ?
>Something else ?

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