Scott,
I had a similar saw for years. The problem with it is the dust/chips pass right by the trunion on the way to the DC. I am not sure there is a good answer. I settled on graphite lube because it is dry. I felt a oil/grease type lube would work fine but get full of dust much quicker. I just "knuckled under" and cleaned it thoroughly every year at the beginning of the year. That tri-flo sounds VERY interesting!!! Try it and let us know.
The one big complaint I had is that the blade tilt was long and hard, esecially if you were going to cut 45's. I always worked alone, then one day someone was there and took the weight off the motor as I cranked and it was 75% easier!!!!