Mich. Comp. Laws § 752.254: Liquid fuels, lubricating oils; substitution, mixture or adulteration unlawful.

Sec. 4.

It shall be unlawful for any person, firm, co-partnership, association or corporation to expose for sale, offer for sale or sell under any trade-mark or trade name in general use any liquid fuels, lubricating oils or similar products except those manufactured or distributed by the manufacturer or distributor marketing liquid fuels, lubricating oils or similar products, under such trade-mark or trade name, or to substitute, mix or adulterate the liquid fuels, lubricating oils or similar products sold, offered for sale or distributed under such trade-mark or trade name.