Oh crud, I read about this earlier, but what was the first thing I did when I picked up Mr. Blue Graphite Prospero?
There was only about a quarter-tank there when I picked him up, and as I live in a village where the nearest petrol station is 9 miles away, I decided I'd better fill up while I had the chance. I had a couple of things to pick up at Morrison's, because out local Tesco doesn't stock them (and as for the village, Co-op, don't make me laugh). So I just went into the petrol station there and filled up, without a second thought.
Well, I don't suppose 40 litres is going to kill anyone, and I don't usually fill up there any more.
Rolfe.