LUBRIPLATE Dexron III/Mercon is a newly developed premium fluid fully qualified to cover current requirements for both General Motors and Ford. Dexron III is a General Motors trademark for qualified automatic transmission fluids. Mercon covers all automatic transmissions for Ford model year 1988 and after. LUBRIPLATE Dexron III/Mercon is designated as make-up and/or refill fluids to meet respective car warranties.