Dealer put Motorcraft Gold coolant in 2009 Expedition after replacing water pump. However, they did not adequately top off coolant afterwards and the reservoir was dry. Dealer told me they put in Motorcraft Gold, which I confirmed by opening the cold radiator and inspecting the fluid. Dealer told me under no circumstances to mix the Gold with any other coolant because it is not compatible. Returned to the dealer for them to top off the coolant. Got home and looked at the reservoir and of course, it is bright Green! Opened the radiator, and what was a slightly low Gold color coolant is now also bright Green.
Are Gold and Green actually compatible? Or, do they need to tow it back the the dealer, flush the entire cooling system and refill with Gold coolant?
Are Gold and Green actually compatible? Or, do they need to tow it back the the dealer, flush the entire cooling system and refill with Gold coolant?