MI SB0421

Prohibits sale of engine coolant in Michigan manufactured on or after January 1, 2012, containing more than 10% ethylene glycol unless it contains denatonium benzoate at 30-50 parts per million or an equivalent bittering agent.

Requires manufacturers and packagers to maintain records for a minimum of 3 years containing the trade name, scientific name, and active ingredients of any bittering agent, made available to the public upon request.

Provides liability protection for manufacturers, processors, distributors, recyclers, and sellers of compliant engine coolant against claims for personal injury, death, property damage, environmental damage, or economic loss resulting from the inclusion of denatonium benzoate at specified concentrations.

Exempts motor vehicles sold with engine coolant already installed and wholesale containers of 55 gallons or more from the bittering agent requirement.

Authorizes the Attorney General and any other person to bring civil actions for injunctive relief, and allows the Attorney General to impose civil fines of up to $500 per day of violation, plus attorney fees and costs if the plaintiff prevails.