I run tribo power matrix drops and it does make a difference in the comm wear and power of the motor.
However when running it in a stock motor, you absolutely have to use VERY LITTLE. too much will gump it up. I found that for me, the best thing to do was put the smallest amount possible on the brushes, work it in on the brush face, and then go and run the motor.
When I put a drop on the comm as it recommends, the motor wouldn't perform as well. However in 19T or mod, it works excellent.
tribo is probably the best stuff to use, I guess that's why Reedy uses it exclusively from the sources I have.