i ended up using the old filler and mine did work with the heavy wight oil. i counted how may pumps it tok to get to 90ml and then pumped in that much. it looked pretty full but not over flowing. i also removed the brass ring to let it go over 31-32mph, and it does do about 42mph now, but now i hear a soft whistling noise from the tranny?!? is that normal or did i screw something up? thanks again!