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Old 03-09-2013, 06:47 PM   #1
dingoqing
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Seek suggestions about coolant for ford focus 2005

Hi, My ford focus 2005's coolant is below the "Min" level, so I decided to add some of it. At dealer, the sales man said I can direct add the coolant(not a pre-mixed one) without 50/50 mix with distill water. How ever the ford's manual said I should firstly do the mix before add into the coolant container. Who should I believe?
By the way, the PH value of coolant in my car is 6.5 now, but I don't want to bother to change the coolant(the dealer said one gallon is not enough if I want to change all the coolant), will it help if I direct add the coolant bought from dealer without mix with water? Or I just drain some of the coolant (less than two gallons) out of my car and add the 50/50 mixture (which should be 2 gallons) direct in it. I'm sorry if this idea is stupid.
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Old 03-09-2013, 07:03 PM   #2
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Just add water or just add straight coolant. The capacity off the reservoir is relatively small in comparison to the total system coolant capacity. It's not going to make a huge difference on a one time "top up".
Coolant ph is irrelevant. Measure the specific gravity using a hydrometer to determine the coolant freezing point.
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Old 03-09-2013, 07:24 PM   #3
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Great, Thank you so much.
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Old 03-09-2013, 10:01 PM   #4
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Yep, and don't worry about premixing yourself, the motor will do it in about 30 seconds.
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Old 03-10-2013, 09:56 AM   #5
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You ph should be between 9.5-10.0 unless you like acid circulating inside your engine.
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Old 03-10-2013, 11:15 AM   #6
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Your car uses gold colored coolant, but if you have some green laying around it won't hurt anything. Gold is an extended life coolant that you can add any other sort of coolant- except DexCool- to and it will still be ok.

Newer Fords use red coolant like Toyotas. I guess Ford went through a few years using the hybrid coolant so people could get used to new coolants before switching entirely to a full OAC like red. Regardless of Ford's wisdom, the ensuing drama will continue to perturb the population for years to come. Eventually you'll see things like "mixing gold, green, and red coolant can cause a cold fusion reaction in your car". As if..
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