How much fuel does a Westfield Tank Hold?

A Standard Westfield Fuel Tank hold around 28.4 Litres (6 .25 UK Gallons), an earlier "SE" (circa 1989 - 1994) tank was a bit smaller and only held approx 25 litres (5.5 UK Gallons).
There is a long range version that is usually fitted to the V8 (Seight) Cars but may also fit the later SE cars,
this tanks holds around 42 litres (9.23 UK Gallons)

Summary:
Early "SE"   =  25 ltrs (5.5 gal)
Later "Seiw" = 28.4 ltrs (6.25 gal)
Long Range = 42 ltrs (9.23 gal)

Please bear in mind, these are only approximations and you may get less in the tank on a  cold day or if your gauge is displaying incorrectly!