more blowby
slightly higher engine temps 10-15 degrees
uses or burns (internally??) 1 gal of oil every 800 miles
oil is coal black shortly after changing
seems to have a little lack of power when loaded
no blue or white smoke from the stacks
so,with that said,I am suspecting maybe a bad injector o ring letting a little fuel into the oil, lowering the viscosity of the oil,causing it,the thinner oil, to burn off inside the motor,
causing the increase in blowby,and added oil consumption and black oil,and a tad loss of power
just a theory