92 400E oil pressure sending unit replacement
After reading through the archives for this forum, I have determined that I need to replace the oil pressure sending unit. I understand that this is a DIY job and that the sending unit is located in the vicinity of the oil filter housing.
With this in mind, I have two easy questions:
1. Do I need to drain the oil prior to changing the sending unit ?
2. Do I gain access to the sending unit from above (under the hood) or below (under the car) ?
Thanks in advance for any help.......