Once again, a disappointing fill up at Morrisons. Apart from the fact that I was shopping there yesterday and didn't top up, then went in for petrol this morning and found it had gone up a penny a litre overnight! Lucky Friday the 13th.
What was disappointing was the fact that that my fibometer said 58.1 mpg for the tank, my ScanGauge said 59.8 mpg and my calculated figure was 53.2 mpg. That is roughly a 20% drop since my last top up, with almost identical drives and weather conditions.
As I said, disappointing.
I think I will try one of the less convenient to get to filling stations for a spell. See how it goes.