While my M3W is in its winter storage at a local classic car garage, I am going to get them to change the Crankshaft Position Sensor to one of Andy Warren's ones. I have translated the instructions into French using Ai, gone through it and corrected some of the howling errors, like calling a crankshaft an operating handle etc (Manivelle when it should be Villebrequin). I am also going to get them to replace the brake fluid and bleed the brakes (purger les freins). My question to the forum is what is the best fluid? DOT 4 or purple DOT 5 silicone fluid? I would guess DOT4 but not sure.
DOT 4 is ideal. DOT 5.1 is also very good but definitely not the silicone DOT 5. The silicone fluid doesn't mix well with normal fluids and would almost certainly rot at least some of the seals in the system.
Just thinking about servicing for when I get back to France early next month, am I correct in assuming that as the tappets are hydraulic, there is no requirement to set valve clearances.
