Aero-Classics offers factory new FAA-PMA oil coolers and heat exchangers. Factory new units have a two-year/2,000-hour limited warrranty. Manufacturer of aluminum heat transfer products ie air to air, air to liquid, liquid to liquid and liquid to air for aviation automotive or what ever your needs are. For technical support contact Wayne Thomas at (909) 596-1630 or ([email protected]) or Mark Oldham at ([email protected]) (909) 596-1630. Hours: 6 a.m. to 5 p.m. Monday to Friday Pacific time.