Hello together, maybe someone can help me. I wanted to change the oil filter on a Cali III. Unfortunately, the oil tank does not dissolve after removing the screws. The part is as hard baked with the engine block. I suspect that the seal has been glued. Unfortunately, I have already broken 2 pieces of the tub edge, so that a new part is probably due. The responsible of this brain cracked construction (oil filter in the oil tank ??) should one today still stoned n. Greetings Peter