blue coolant temp sensor on an aeg?
 

all i can find is green top that works for all mk4's but a guy told me he wouldnt put it in because the blue and green could put out different voltage...the blue one is for tdi only...anyone know where i can buy one of these blue top ECTs for my 1999.5 2.0 8v aeg? or if the green top is ok for my car?