AUTOMATIC BOX ESCUPE BARILLA DEL Nive

Hello, I am Javier for Javea, (Alicante) I have a BMW E30 316i Automatic, I have drove it for 5 or 6 years and from entuces that happens to me, every x km lifted the capo and I find the bar of the level making the cap on the same capo. Well, I could see that depending on the conduction (lower or higher regime) it spits it with more or less frequency, I take care of maintenance and at the beginning I already changed the fitro of the hydraulic fluid + oil, but continues to spit the barilla as said before.
Thanks for the attention.

I guess you mean the gearbox.
All gearboxes normally carry a breathlessness at the top of the change.
If the vent is obstructed, the change has to breathe somewhere and the barilla spits.
Pruba to clean it with pressure or disassembling it and tests it.
You already tell me greetings.

Thank you for answering, see that I had not thought about the breathlessness, well I am in mind to check.
I will tell you something, greetings.