How is the correct way to flush and replace radiator ? Is there a block drain on this MB? Are there issues on how to refill in order to have no air pockets ?

Can a DIY do a brake fluid flush and replace with and assistant pressing the brake pedal OR is pressure bleeding required on this model. I had trouble with my older 300E and had to have a shop use a pressure bleeder in order to get all air out of brake system. What method is best. I don't have a pressure bleeder yet.

DanielW