Petrol and diesel prices at Asda Bootle Superstore

Asda Bootle Superstore, L20 4BB.

What it is charging

Unleaded: 166.9p a litre, 4.8p under the national average, filed Thursday 29 October
Diesel: 189.9p a litre, 8.8p under the national average, filed Thursday 29 October

Essar Brewster Street Service Statrion: 164.9p a litre, 1.0 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about 37p of fuel to get there and back. Worth the trip.
Asda Aintree Superstore: 166.7p a litre, 3.3 miles away. 0.2p a litre cheaper: saves 11p a tank, and costs about £1.25 of fuel to get there and back. Not worth the trip.
Mfg Grand National: 166.9p a litre, 1.3 miles away
Sainsburys Rice Lane: 166.9p a litre, 1.3 miles away
Asda Bootle Orrell Lane Supermarket: 166.9p a litre, 1.5 miles away
Sainsburys Liverpool Great Homer Street: 166.9p a litre, 2.0 miles away

On a 55-litre tank at 40mpg. The distance is straight-line rather than by road, so a real trip is longer than the one costed here.