2001 mustang gt coolant change - Ford Mustang Forum
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post #1 of 26 (permalink) Old 09-04-2008 Thread Starter
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2001 mustang gt coolant change

The coolant in my mustang looks like crap (i forgot the green stuff is only good for 30,000 miles) so im going to flush the crap out of it, How much will i get out if i just drain the radiator? The total capacity is 16 quarts right? Would it be okay to use the prestone long life universal coolant? it is either yellow or clear in color.
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post #2 of 26 (permalink) Old 09-04-2008
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The coolant in my mustang looks like crap (i forgot the green stuff is only good for 30,000 miles) so im going to flush the crap out of it, How much will i get out if i just drain the radiator? The total capacity is 16 quarts right? Would it be okay to use the prestone long life universal coolant? it is either yellow or clear in color.
Drain your coolant out and unhook the upper and lower radiator hoses from the radiator (not the engine block). Wrap a shop towel around the end of your garden hose and wedge the garden hose into the radiator hose and have someone turn on the water full blast. This will flush all of the old coolant and other crap that might have accumulated inside your engine block. Once it runs clear water out of the lower hose pull the garden hose out of the radiator hose and stick it into the upper radiator inlet and flush that out as well. Once your done, re-connect all of your hoses and pour in a bottle of coolant concentrate (not 50/50) because you already have plain water in the engine block. The bottle of concentrate won't fill up the radiator all the way so top it off with distilled water and you'll be good to go.

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post #3 of 26 (permalink) Old 09-04-2008
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You can also get a powerflush kit for less than $10 at walmart or a parts store, they are easy to install and use, and work very well, but it requires cutting a heater hose and installing a t fitting to attach a garden hose, which you put a screw-on cap afterwards.

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post #4 of 26 (permalink) Old 09-04-2008 Thread Starter
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You can also get a powerflush kit for less than $10 at walmart or a parts store, they are easy to install and use, and work very well, but it requires cutting a heater hose and installing a t fitting to attach a garden hose, which you put a screw-on cap afterwards.
Thats what i was thinking about doing, but would i get the right mix of coolnat to water if i filled the expansion tank/radiator with straight coolant being there is all water in the block? When i have done coolant flushes before i always used distilled water is using regular water okay? i have always heard to use distilled
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post #5 of 26 (permalink) Old 09-05-2008
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also, remove your thermostat to flush the system and this would also be a good time to change it out for a 180* thermo and also get yourself a bottle of Red Line "Water Wetter" and add it to the coolant system too.....
post #6 of 26 (permalink) Old 09-06-2008 Thread Starter
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The original thermostat is still going so i will probably leave that alone, Since it dosent have a cap on the radiator i will just have to wait until the car warms up and the thermostat opens up and fill through the recovery tank right?
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post #7 of 26 (permalink) Old 09-07-2008
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The original thermostat is still going so i will probably leave that alone, Since it dosent have a cap on the radiator i will just have to wait until the car warms up and the thermostat opens up and fill through the recovery tank right?
You don't have a cap on your radiator!?

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post #8 of 26 (permalink) Old 09-08-2008
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You don't have a cap on your radiator!?

none of the modular Mustangs do, the cap is on the De Gas bottle, which is where the coolant goes...... if you flush the coolant system wth the thermostat in place, you run the risk of getting debris in it and causing it to stick and having the car overheat or not warm-up at all........it's only 2 bolts and a reusable o-ring, so I'd remove it and replace it wth a 180*
post #9 of 26 (permalink) Old 09-09-2008
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I would change the thermostat as well, its cheap insurance and very easy, and water-wetter is worth it, it works.

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Thats what i was thinking about doing, but would i get the right mix of coolnat to water if i filled the expansion tank/radiator with straight coolant being there is all water in the block? When i have done coolant flushes before i always used distilled water is using regular water okay? i have always heard to use distilled
No, after filling, drain everything out and mix distilled water and coolant, you can use tap water, but not recommended.

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post #10 of 26 (permalink) Old 09-16-2008 Thread Starter
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also, remove your thermostat to flush the system and this would also be a good time to change it out for a 180* thermo and also get yourself a bottle of Red Line "Water Wetter" and add it to the coolant system too.....
Are you saying to replace the thermostat before flushing the coolant?
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Are you saying to replace the thermostat before flushing the coolant?

no, remove the thremostat before you flush and after your done, put in a new one....
post #12 of 26 (permalink) Old 09-16-2008 Thread Starter
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So, pull the old thermostat,flush with the power flush adapter and then install the new thermostat?
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So, pull the old thermostat,flush with the power flush adapter and then install the new thermostat?

correct and please stay away from the "parts store" ones and ONLY buy an oem Ford part.....
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I've never had a problem with the parts store thermostats, but oem ford is a better part, most factory stuff is better quality. They charge more, but like most things in life, you get what you pay for.

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post #15 of 26 (permalink) Old 09-16-2008 Thread Starter
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correct and please stay away from the "parts store" ones and ONLY buy an oem Ford part.....
I agree completely, i always use genuine parts. When i drain the radiator how many quarts should i get out?
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