thanks mate i m not an expert on fuel but what you just said is exactly what my mechanic said, and makes sense if you think about it. all i know is that there is seperation in my tank from premium and ultra fuel so there is ethanol in these fuel sorces. i cleaned out my tank yesterday and with 100 litres off fuel i removed 655ml of watery sludge, i know that doesnt seem much b ut being on the bottom of the tank is the first sucked up into the lines.
anyway i am still looking a clean servo will try caltex for awhile.
kel...........