(a) A dealer may not sell or offer for sale from a motor fuel pump motor fuel that has an automotive fuel rating lower than the rating for that motor fuel posted on the pump.
(b) A distributor, supplier, or wholesaler of motor fuel may not deliver or transfer to a dealer in this state motor fuel that has an automotive fuel rating lower than the certification of the rating the distributor, supplier, or wholesaler is required to make to the dealer under federal law.