Hi dear US car fans, have been driving an Oldsmobile / Chevrolet Alero Bj. 1999 with 3.4 V6 and the 4T45E transmission for years now. I now have 150Tkm down with it and it was time for a second gear oil change. At the first everything in the solder (2011), after change everything as before. Also now on the second all top, only fine stuff in the tub, no metal chips, beautiful pink oil, transmission switched tip top before the change. The 4T45E has known no dipstick, but a test screw, where m At normal operating temperature the oil just runs out and then it should fit. So 6,4 liters out, 6,4 liters in, no oil outflow so still 100 ml after and it runs out below, but not much. Screw closed, done … but … Now the Alero drove as if there was too little oil inside, the transmission toured high about 200-500 rpm’s to get into the Karftschluss and to march off. The worst are climbs with trucks, because I thought I have 100 hp st att 177. So check again and everything fits and still he drives like that. Mechanic just yesterday filled 250 ml more oil without loosening the screw and let me drive … look, he drives much better now, the slipping is still, but almost not worth mentioning. Has one of you ever experienced something similar? Can 250 ml more oil damage? Without that he drove totally bad. Thanks for your answers in advance.