IF POSSABLE YOU MIGHT CHECK YOUR RETURN FUEL AFTER YOU HOOK UP AN ALTERNATE FUEL SUPPLY. WE HAD ONE IN THE SHOP THAT HAD LEAKING O-RINGS AND FILLED THE FUEL TANK WITH OIL. I WONDER IF THAT MAY BE HAPPENING OR IF YOUR #6 CYL IS BURNING MORE OIL THAN FUEL. YOU M... Login to read more.