I do not have the usage rates for the EVO 36 we are running, but I do notice a significant amount of raw fuel in the propwash. From my observation of it while it is running, I believe that most of this is coming from the front bearing where there is only the outer shield in the bearing. Next time I have it off of the plane, I intend to replace the front bearing with a sealed bearing. I'm not sure wheter I will remove the rear seal on this bearing, or leave both sides sealed, but either way I hope it will redulce the fuel usage from waste out of the front bearing.
Richard