Playing with my type K thermocouple and oil temperatures in the Caprice has me wondering where everyone's "proper" oil temperature gauges are reading. I'm measuring at around the mid point of the dipstick F/L, but have noticed that there's a gradient of 12-15C down to the sump wall (to be expected). Has got me wondering where all of these "proper" temperature gauges are reading ? Thermoprobes close to sump walls, sensors in galleries ? Please list yours if you know it. Some alfas (Suds) in Oz had their oil tempertures measured by a special dipstick, as did (I think) Jean Berg when playing with Dak Daks.