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Coolant flush?
My truck had the gold stuff from the factory so I went to Ford, picked up 3 gallons, and changed it today. I drained the original stuff, filled up with water, and drove about 3 miles with the heat on, and then drained the water. After that I did three more flushes with the heat on full and the engine off. The stuff I was getting out of the pet**** still had a strong gold tint to it. Finally I opened the pet****, filled the overflow tank with water, and started the engine. As the engine would pull in more water and spit it out the pet**** I kept adding more. I did this until I filled a five gallon bucket twice. The last bucket of water was still pretty gold. I finally gave up and just put in a 50/50 mix (2 gallons 1 quart each for a total of 4 and 1/2 gallons) of new gold coolant and water.
Should everything be ok then? As far as I know the coolant was never changed as I bought it at 83K and it just turned 100K this past week. I never really gave this much thought to changing coolant in a vehicle, but the cavitation issue scares me and I want to make sure everything is done correctly. Do I still need to test the PH even though the gold stuff doesn't require the additive?
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