Sorry, I just like to keep all the info in one place, hence the revive!
Mine must have a fault then, I'm constantly putting £20-£30 in it & as it's only a weekend toy I don't really notice how bad it's been, I only realised on Saturday I drove 70 miles on £20, I thought wow, that's not great, more than half the journey was at 50 mph on the M3 so I wasn't even going mad.