Hi, im in the process of replacing my cam cover but also fitting a new MD plenum spacer, as the workshop manual suggests draining the engine coolant before doing this.(also want to do it as im halfway through doing a P3 service on the car).
I notice that the radiator drain plug is easy to get at but it suggests that the engine block plugs should also be removed? Do you normally do this when you change your coolant???
Just asking as the undertray bolts (ones with the metal clips) hav rusted solid and wont come off without ripping the plastic, leaving the holes ruined like the otherside The bolts in the middle are all fine and the ones at the back so what do you recomend?
(mainly should I remove all drain plugs or just the main one on the radiator?)
Also I have bought halfords coolant that is for alu engines should this be ok? and what mix should I use since I am from Scotland and its still a bit cold was thinking 40/60?
Thanks