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Flushing Coolant

nsta

By nsta,
in Tutorials / DIY / FAQ

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mickr33 Community Regular

mickr33

Posted
Posted
Hey people, could someone please post how to flush the coolant from my rb25det, and what type of coolant to replace it with, its been about 2 years since ive done .

this.

r33 coupe 25t

thanks

Hey nsta. There's a bolt on one side of the radiator right on the bottom underneath. undo this to let the coolant out. I went to Nissan and asked for coolant. When it's full again bleed the system out by undoing a small bolt which is the highest point on the engine so there's no air in the system. (It's near the fuel rail) be carefull as mine was stubbourne to undo. Just spray with wd40,rp7 etc and let sit for a couple of minutes and gently undo. Hope this helps....

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Topkart R33 Community Regular

Topkart R33

Posted
Posted (edited)
Hey nsta. There's a bolt on one side of the radiator right on the bottom underneath. undo this to let the coolant out. I went to Nissan and asked for coolant. When it's full again bleed the system out by undoing a small bolt which is the highest point on the engine so there's no air in the system. (It's near the fuel rail) be carefull as mine was stubbourne to undo. Just spray with wd40,rp7 etc and let sit for a couple of minutes and gently undo. Hope this helps....

Also it's a good idea to add 1.5-2L of coolant and let it sit for a couple of minutes then add again in stages til full. With the motor being hot you don't wanna risk cracking the head or radiator with cold coolant.

Edited by Topkart R33
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Topkart R33 Community Regular

Topkart R33

Posted
Posted
thanks, though when i mix the coolant with water, does the water have to be distilled, or just tap water????

and is it best to mix the water and coolant at the same time into like a carton?or add coolant, then water?

Buy some premixed coolant in bottles....about 8 L to be safe. I used 90+ at 33% coolant ratio. If you do want to mix you definately need distilled water. Stops corrosian on alloys, but the easiest way is premixed.

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  • 1 month later...
raz0r$harP.UK Grand Master

raz0r$harP.UK

Posted
Posted

nsta: As stated up the top of this forum, This is *NOT* the place to ask questions or to try and get help.

There is no need to create two threads in differnt forums asking the same question. All you are doing is effectively making it hard to find all the answers from everyone.

As has been said before to you, please make the effort to search for the info you're looking for, because the majority of questions you ask have been asked before, several times.

I just did a quick search and found the following threads about flushing your coolant:

http://www.skylinesaustralia.com/forums/in...showtopic=96319

http://www.skylinesaustralia.com/forums/in...showtopic=69726

http://www.skylinesaustralia.com/forums/in...showtopic=62427

http://www.skylinesaustralia.com/forums/in...showtopic=53159

http://www.skylinesaustralia.com/forums/in...showtopic=12332

These two are for RB20 and RB26 but should give you some good advice

http://www.skylinesaustralia.com/forums/in...showtopic=43402

http://www.skylinesaustralia.com/forums/in...showtopic=67730

and this thread mention what sort of coolants to use

http://www.skylinesaustralia.com/forums/in...showtopic=27793

Vijay

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