Ohio Rev. Code Ann. § 1345.021 – Ethanol blended or mixed into gasoline

(A) As used in this section, "retail dealer" means a person who owns, operates, controls, or supervises an establishment at which gasoline is sold or offered for sale to the public.
(B) When ethanol is blended or mixed into gasoline that is sold or offered for sale to the public, it is not an unfair or deceptive act or practice in connection with a consumer transaction for a retail dealer to fail to disclose either of the following:
1. (1) The fact that the gasoline contains ethanol;
2. (2) The percentage of ethanol that is contained in the gasoline.
(C) If a retail dealer elects to disclose any of the information specified in division (B) of this section, the dealer may make that disclosure in any form, using any type of sign or label and any size or style of letters, at the retail dealer's discretion.
(D) A retail dealer shall not be required to disclose the fact that gasoline contains ethanol and shall not be required to disclose the percentage of ethanol in the gasoline by any law, rule, resolution, or ordinance of any agency or department of the state or any political subdivision of the state.