wigan wayne

MY93WRX
This week I've had what I think is a bad tank of fuel.
Within few miles of filling her up with Optimax(as usual)
lack off power, flat spots and now a fuel cut at high revs.

Are these due to the fuel and low octane. I've put some
extra octane booster in and flat spots have gone but this
morning I've had this- high revs then bang power goes, change up gear
and away she goes again.

I'm gonna take it easy time the fuels gone but
Never had this before and would be interesting to know why
it happens.?


Cheers

WW