The fluid level is critical on turns, try adding just 1/4 to 1/2 quart of trans fluid.
Many newer cars have a different filter that has fluid pick-up at both ends depending on car movement. You can install this filter in your car as well.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)