In my C70 I year 2002 I made an oil change of the automatic transmission. It switched off roughly when reversing and down. But all gears went in perfectly. Transmission is a 55-50 SN. This is how I went: 3 liters over drain screw drained 2 liters filled return run off from the oil cooler – motor tapped on and 1.5 liters off – 1.5 liters refilled the whole 3 x Then 2.5 liters filled up. This should be the previous amount back in. Transmission now switches butter soft, but unfortunately only up to the 2nd gear. When switching to the 3rd gear -> no force limit. Then I replenished about 600ML. Was then a little better, but with too much gas again idle. Then again 400 ML refilled. So it got worse again. So again 500ML drained. No improvement. I’m baffled. Does anyone have a solution?