Not all the M3W's are the same as some have a Volvo internal clutch slave cylinder but the parts manual shows an external (Mazda?) type as well. I have the internal one and it's the only type I have seen. On my car the clutch bleed nipple is on a black plastic fitting on the top of the gearbox bellhousing, directly below the oil tank, it has a braided supply hose and a bleed nipple connected to the fitting. Be very careful with the plastic fitting, you don't want to damage it as it is an engine out job to replace it. Just bleed the clutch in the same way as you would bleed the brakes. I use an Ezibleed kit connected to the reservoir and change the clutch and brake fluid at the same time. The clutch fluid gets surprisingly black and dirty looking, even though it gets changed every other year.
