I searched some threads but am unclear. Is it possible to remove the ball joints with a ball joint press on the car?

Can someone help with the procedure? I do have a press if that works best.
Secondly, the dealer tells me that for my 1990, tranny fluid is Dextron 3. Any thoughts as the owners manual says use mercedes fluid?

Walter

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Walter Sawczak
1990 300 E
1993 Lincoln Mark VIII
1983 Jaguar XJ6