Yeah, I used an oil pickup extended the same depth as the oil pan increase in the hopes of maximizing the circulating oil's contact with the metal exposed to the air.
It's pretty much what I expected to find, a minor oil temp drop due to increased surface area exposed to the atmosphere. As MikeHalloran implies, one data point is hardly conclusive. I did it because the larger oil pan and pickup were readily available and inexpensive.
thread89-169171
Doing this modification to a 2006 URAL 750 cc 40 hp engine did show a 10 degree F. decrease in stabilized running oil temperature. Temperature was measured with a bimetal dipstick dial thermometer. Temperatures were (Fahrenheit) 312 degrees standard sump & 302 degrees deep...