John Downing wrote:

The  Haynes manual shows a oil level sensor and temperature sensor located in the pan.  The pan I have, has only the sensor which is held in by a 3 bolt flange, which sensor is this.  I can not remove this without removing the engine, so if it is a temp sensor, I assume it probably isn't compatible with my gauge.  Where are you fellows picking up your oil temperature from. 

As a few others have said, it is customary to measure the temperature AFTER the cooler but before its used by the engine. The temp prob on the oil pan, which from your description appears you DO NOT have.. (low oil level sensor only)...is used ONLY for sensing  the need for factory installed cold start assistance. That temp sensor is not used by the factory ECU for any other purpose - cold start only. If you want to measure oil pan temps, thats fine, but use that as a value to measure effectiveness of cooling (delta T) across the cooler, and make sure you check it after the cooler with some sort of temp probe.

In my install, I have a remote oil filter, and I am going overboard with a full size, remote mount Fram HP-1 oil filter (same thing on big Ford's). The remote mount I have has 2 in and 2 out ports.. so one of the OUT ports has a temp probe in it. Filter size is probably overkill.. but there are a few areas that I have intentionally gone robust/overboard. Oil and fuel filters are one. Cooling air intake is another.

Dave