Some engines with balance gears have the oil fill tube up top and the real dipstick on the cam cover on the side of the engine. A long dipstick in the top fill will interfere with the balance gears. Hence the short one. Not sure why some have the top fill and some don't. My two 129s don't have the top fill while the 147 had both. Maybe they made the change with the WFs?
__________________
|