I don't know what oil was used before because I noticed that the oil was clean when I bought the car from the auction. Nothing was wrong until i changed the oil, oil filter, spark plugs, and oxygen sensor.

I'm using the magnatec one at the moment and it seems to work fine but as you said....it might have clogged up the oil filter. might change it again after another 1000kms.

Gaz...mine is supposed to do that but it just sits up top no matter what i do sometimes. Other times it would just sit half way and then move slightly when I rev it once I let go of the throttle it would fly to the bottom again until I accelerate and then it just goes up to half way...changes everytime. might be sensor

phong =P~