I think you are all on the right track with static etc. but there could also be another reason.Any transmitting device be it a cellphone or transciever not only transmits a
modulated carrier but also third seventh and mutiples thereof of harmonics. However miniscule these harmonics are, they potentially can interfere with the electronics of the
fuel delivery circuitry, and thus cause errors in fuel readings and/or pricing. Maybe I should try it at Elstree I might get full tanks for a lesser reading!!!
