How much coolant? - Nissan Forums : Nissan Forum
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post #1 of 16 Old 10-26-2004, 04:20 AM Thread Starter
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How much coolant?

I will be changing my coolant this weekend, so I picked up the coolant and things I need. I have never changed coolant before, only oil, so I have a few questions.
1. On the back of the coolant, it said that it can be diluted up to 75%/25% mixture. I know the owners manual says 50%/50%. What will happen if I did the 75/25 mix?

2. Is one Gallon of coolant enough?

3. How do I get the right mixture?

4. Do I have to use distilled water?


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post #2 of 16 Old 10-26-2004, 07:19 AM
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you should've gotten Prestone 50/50 pre-mix coolant and a bottle of redline water wetter...but your preference.....you will also need a little more then a gallon as well, may seem like a lot, but when you do it a gallon really isn't enough, if you have a haynes you should be able to do it.
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post #3 of 16 Old 10-26-2004, 03:46 PM
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1. On the back of the coolant, it said that it can be diluted up to 75%/25% mixture. I know the owners manual says 50%/50%. What will happen if I did the 75/25 mix?
I'd recommend stay with the 50/50 mix unless you need freezing protection lower that -25 F degrees.

2. Is one Gallon of coolant enough?
Yes. The system takes 8.5 quarts. One gallon is 4 quarts so you would use 1 gallon of coolant and 1 gallon of water.

3. How do I get the right mixture?
Fill another container with half of coolant and half of water. Then pour the mixture in the radiator.

4. Do I have to use distilled water?
No. But if you know that the water contains a lot of metal particles like iron then don't use it.



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post #4 of 16 Old 10-26-2004, 05:24 PM
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Quote:
Originally Posted by BLACK SE
you should've gotten Prestone 50/50 pre-mix coolant and a bottle of redline water wetter

Werd, I used the water wetter as well; recommended only half a bottle to avoid winter problems, so that's all I used.

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post #5 of 16 Old 10-27-2004, 08:08 AM
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I believe he means to say 75% water/25% antifreeze mix.

Using less than 50% antifreeze mix will limit it's ability to prevent water freezing. Say if 50% mix would prevent freezing down to -45 degrees, 25% mix will only prevent freezing down to -20 degrees. I don't know any exact antifreeze/coolant performance numbers. The ones I mentioned are only hypothetical. The specifications should be on the back of the bottle.
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post #6 of 16 Old 10-27-2004, 04:10 PM
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I guess it depends on where you live too, considering the fact that I live in a warm climate as do you Devnull, but these guys live where it gets 30 below, so different mixtures for different climates I presume
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post #7 of 16 Old 10-27-2004, 06:46 PM Thread Starter
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ok, I know I must sound like a newb, but are there any differences in changing the coolant, and a flush? Also I do know that I have to take off some traps of something in the engine block right? To make sure the air comes out? Anyone got a pic?

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post #8 of 16 Old 10-27-2004, 07:03 PM
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it a 10mm bolt rdirectly below the distributor cap, it'll have a yellow sticker on it, remove that then drain the radiator and also remove the bolt on the brass pipe right below the block on the passenger side, that's the coolant that's sittin in your block, once that is drained, put that bolt back on but leave the bleeder bolt off, then start your flush.
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post #9 of 16 Old 10-27-2004, 08:52 PM Thread Starter
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Ok, to make sure I got this right

1. turn the ignition in "on", then turn the heat on maximum hot and wait 10 secs. and turn off
2. open radiator's drain at the bottom of radiatior.
3. remove drain plug on water pipe and air relief plug
4. replace the radiator drain plug and fill radiator with water until water flows from air relief plug
5. open radiator's drain and repeat steps 4-5 until water is clear
6. Replace ratiator and water drain plugs
7. Fill radiator with new coolant until it spills from air relief hole, then replace plug.
8. Fill radiator and reserve tank to specified level
9. warm engine WITHOUT radiator cap on
10. Let engine cool, reinstall radiator cap, and refill the radiator and tank to specified level
11. warm up engine and watch temp guage.

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Last edited by SexyGXE; 10-27-2004 at 08:55 PM.
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post #10 of 16 Old 10-27-2004, 08:59 PM
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#10? make sure coolant is moving past the radiator, that way you know that the therm. has opened, top off then replace the cap and your done. Check the level after driving it a day or two and top off if needed. You got the rest right bro, happy flushing!!!!
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post #11 of 16 Old 10-27-2004, 09:06 PM
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Sounds about right t'me. It may be difficult to refill the radiator with the radiator cap reinstalled

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post #12 of 16 Old 10-27-2004, 09:16 PM Thread Starter
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Ok, is 1 gallon of coolant enough? Jserrano says yes, black Se says no. Maybe if I add a bit of water wetter?

Also, what is the easiest way to get the best/correct mixture of both water and coolant? Should it be mixed before I pour it into the radiator?

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post #13 of 16 Old 10-27-2004, 10:21 PM
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I said that because I used the 50/50 premix coolant, so I wasn't mixing I was just pouring. I had to run to autozone to get another bottle. But you have distilled water you are mixing so that may be enough. CAUTION: you live in a cold climate, use only 1/2 of the water wetter, don't use the whole thing, or you will have some problems down the road.
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post #14 of 16 Old 11-01-2004, 05:03 PM Thread Starter
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Thanks to all, I did it. I changed my coolant and my oil this weekend. I just followed the haynes manual. The only trouble I had was trying to get the water pipe bolt off. After that I was smooth sailing.

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post #15 of 16 Old 11-01-2004, 05:07 PM
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Quote:
Originally Posted by SexyGXE
Thanks to all, I did it. I changed my coolant and my oil this weekend. I just followed the haynes manual. The only trouble I had was trying to get the water pipe bolt off. After that I was smooth sailing.

Yeah that bolt is difficult to remove only because of the position that it's in, I went underneath the car and loosened it, then removed it once I was over the engine bay. Glad to help bro!!!
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