[sambb]

righto. premium it is then and E10 if premium isn't around. Sounds like these motors are very sensitive to octane. hadn't really experienced that before in a run of the mill passenger car engine before. It just surprised me that they are so sensitive to fueling - c'mon 100 and a bit kw aint much. They must be pulling sooo much fuel out of these things that they are right on the edge.
thx all