I'm going in for the PI headswap tomorrow. I'm about due for a oil change also. Should I change the oil today or wait until after the work is done? I'm not sure if they have to take out the oil when they do the work anyway. Thanks.
Change it right after the swap is done to get any dirt, debris, and engine coolant that is now in the oil. If you change it before you will just be contaminating the brand new engine oil.