Edward,
 Did you notice whether the probe wire unplugs from the case?
If the probe is a thermistor type rather than a thermocouple, it would
be easier to extend the wire without affecting the accuracy.
Thermocouples generate very small voltages which would be affected by
the contact potentials produced by additional connections.

Larry A.

Edward Maglott wrote:
>
> Saw this at the Bed bath and beyond today:
>
> http://www.bedbathandbeyond.com/product.asp?order_num=-1&SKU=11720307&RN=210
>
> I didn't get a chance to look really closely at it in the store.  It did
> say that it should not be used above 400 degrees F.  It may have been
> talking more about the wire going to the sensor than the sensor itself.  It
> also had some sort of alarm feature.  You could mount the sensor down into
> the oil, maybe through the filler area?    You would just need to extend
> the wire to the front of your van.  You could set the alarm to let you know
> when your engine was completely cooked!
>
> Edward