Petrol and diesel prices at Asda Horwich Superstore

Asda Horwich Superstore, BL6 6JA.

What it is charging

Unleaded: 167.7p a litre, 4.0p under the national average, filed Thursday 29 October
Diesel: 189.7p a litre, 9.0p under the national average, filed Thursday 29 October

Horwich Service Station: 164.9p a litre, 0.6 miles away. 2.8p a litre cheaper: saves £1.54 a tank, and costs about 22p of fuel to get there and back. Worth the trip.
Mfg Morrisons Bolton Atlas: 166.9p a litre, 3.4 miles away. 0.8p a litre cheaper: saves 44p a tank, and costs about £1.28 of fuel to get there and back. Not worth the trip.
Mfg Grafton: 167.9p a litre, 3.8 miles away
Swan Service Private Ltd: 167.9p a litre, 4.1 miles away
Mfg Morrisons Bolton Dawes: 167.9p a litre, 4.4 miles away
Asda Bolton Superstore: 167.9p a litre, 4.4 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.